diff --git a/docs/configuration.md b/docs/configuration.md
index ec47dfea4..49f044228 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -12,7 +12,7 @@ configure math.js:
 The following configuration options are available:
 
 - `epsilon`. The minimum relative difference used to test equality between two
-  compared values. This value is used by all comparison functions.
+  compared values. This value is used by all relational functions.
   Default value is `1e-14`.
 
 - `matrix`. The default type of matrix output for functions.
diff --git a/docs/datatypes/numbers.md b/docs/datatypes/numbers.md
index 04dbb042b..18a086995 100644
--- a/docs/datatypes/numbers.md
+++ b/docs/datatypes/numbers.md
@@ -58,14 +58,14 @@ console.log(1e309);   // Infinity
 console.log(1e-324);  // 0
 ```
 
-## Comparison
+## Equality
 
 Because of rounding errors in calculations, it is unsafe to compare JavaScript
 Numbers. For example executing `0.1 + 0.2 == 0.3` in JavaScript will return
 false, as the addition `0.1 + 0.2` introduces a round-off error and does not
 return exactly `0.3`.
 
-To solve this problem, the comparison functions of math.js check whether the
+To solve this problem, the relational functions of math.js check whether the
 relative difference between the compared values is smaller than the configured
 option `epsilon`. In pseudo code (without exceptions for 0, Infinity and NaN):
 
@@ -80,7 +80,7 @@ where:
    `1.0 + DBL_EPSILON != 1.0`. This is a constant with a value of approximately
    `2.2204460492503130808472633361816e-16`;
 
-Note that the comparison functions cannot be used to compare small values
+Note that the relational functions cannot be used to compare small values
 (`< 2.22e-16`). These values are all considered equal to zero.
 
 Examples:
@@ -95,5 +95,5 @@ console.log(3e-20 == 3.1e-20);            // false
 console.log(math.equal(3e-20, 3.1e-20));  // true
 ```
 
-The available comparison functions are: `compare`, `equal`, `larger`,
+The available relational functions are: `compare`, `equal`, `larger`,
 `largerEq`, `smaller`, `smallerEq`, `unequal`.
diff --git a/docs/expressions.md b/docs/expressions.md
index 26260f7de..56afa1c25 100644
--- a/docs/expressions.md
+++ b/docs/expressions.md
@@ -305,7 +305,7 @@ Operators                         | Description
 `x unit`                          | Unit
 `*`, `/`, `.*`, `./`, `%`, `mod`  | Multiply, divide, modulus, implicit multiply
 `+`, `-`                          | Add, subtract
-`==`, `!=`, `<`, `>`, `<=`, `>=`  | Comparison
+`==`, `!=`, `<`, `>`, `<=`, `>=`  | Relational
 `to`, `in`                        | Unit conversion
 `:`                               | Range
 `?`, `:`                          | Conditional expression
diff --git a/docs/reference/functions/categorical.md b/docs/reference/functions/categorical.md
index 622b1493f..023590a71 100644
--- a/docs/reference/functions/categorical.md
+++ b/docs/reference/functions/categorical.md
@@ -30,17 +30,6 @@
 - [unaryPlus(x)](unaryPlus.md)
 - [xgcd(a, b)](xgcd.md)
 
-## comparison
-
-- [compare(x, y)](compare.md)
-- [deepEqual(x, y)](deepEqual.md)
-- [equal(x, y)](equal.md)
-- [larger(x, y)](larger.md)
-- [largerEq(x, y)](largerEq.md)
-- [smaller(x, y)](smaller.md)
-- [smallerEq(x, y)](smallerEq.md)
-- [unequal(x, y)](unequal.md)
-
 ## complex
 
 - [arg(x)](arg.md)
@@ -94,6 +83,17 @@
 - [random([min, max])](random.md)
 - [randomInt([min, max])](randomInt.md)
 
+## relational
+
+- [compare(x, y)](compare.md)
+- [deepEqual(x, y)](deepEqual.md)
+- [equal(x, y)](equal.md)
+- [larger(x, y)](larger.md)
+- [largerEq(x, y)](largerEq.md)
+- [smaller(x, y)](smaller.md)
+- [smallerEq(x, y)](smallerEq.md)
+- [unequal(x, y)](unequal.md)
+
 ## statistics
 
 - [max(a, b, c, ...)](max.md)
diff --git a/docs/reference/functions/format.md b/docs/reference/functions/format.md
index 05dccd499..13cd0935e 100644
--- a/docs/reference/functions/format.md
+++ b/docs/reference/functions/format.md
@@ -58,7 +58,7 @@ Parameter | Type | Description
 
 Type | Description
 ---- | -----------
-String | str The formatted value
+String | The formatted value
 
 
 ## Examples
diff --git a/lib/expression/docs/function/comparison/compare.js b/lib/expression/docs/function/relational/compare.js
similarity index 93%
rename from lib/expression/docs/function/comparison/compare.js
rename to lib/expression/docs/function/relational/compare.js
index 68de08114..8e0ca8cab 100644
--- a/lib/expression/docs/function/comparison/compare.js
+++ b/lib/expression/docs/function/relational/compare.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'compare',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'compare(x, y)'
   ],
diff --git a/lib/expression/docs/function/comparison/deepEqual.js b/lib/expression/docs/function/relational/deepEqual.js
similarity index 93%
rename from lib/expression/docs/function/comparison/deepEqual.js
rename to lib/expression/docs/function/relational/deepEqual.js
index b3f10aa3e..fde52d662 100644
--- a/lib/expression/docs/function/comparison/deepEqual.js
+++ b/lib/expression/docs/function/relational/deepEqual.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'deepEqual',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'deepEqual(x, y)'
   ],
diff --git a/lib/expression/docs/function/comparison/equal.js b/lib/expression/docs/function/relational/equal.js
similarity index 93%
rename from lib/expression/docs/function/comparison/equal.js
rename to lib/expression/docs/function/relational/equal.js
index 8b41bd5c9..e8906e536 100644
--- a/lib/expression/docs/function/comparison/equal.js
+++ b/lib/expression/docs/function/relational/equal.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'equal',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'x == y',
     'equal(x, y)'
diff --git a/lib/expression/docs/function/comparison/larger.js b/lib/expression/docs/function/relational/larger.js
similarity index 93%
rename from lib/expression/docs/function/comparison/larger.js
rename to lib/expression/docs/function/relational/larger.js
index 223bd2c61..91777e29e 100644
--- a/lib/expression/docs/function/comparison/larger.js
+++ b/lib/expression/docs/function/relational/larger.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'larger',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'x > y',
     'larger(x, y)'
diff --git a/lib/expression/docs/function/comparison/largerEq.js b/lib/expression/docs/function/relational/largerEq.js
similarity index 93%
rename from lib/expression/docs/function/comparison/largerEq.js
rename to lib/expression/docs/function/relational/largerEq.js
index 57aaf0d6a..530f67fa8 100644
--- a/lib/expression/docs/function/comparison/largerEq.js
+++ b/lib/expression/docs/function/relational/largerEq.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'largerEq',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'x >= y',
     'largerEq(x, y)'
diff --git a/lib/expression/docs/function/comparison/smaller.js b/lib/expression/docs/function/relational/smaller.js
similarity index 93%
rename from lib/expression/docs/function/comparison/smaller.js
rename to lib/expression/docs/function/relational/smaller.js
index 25bebf36f..a5b58800e 100644
--- a/lib/expression/docs/function/comparison/smaller.js
+++ b/lib/expression/docs/function/relational/smaller.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'smaller',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'x < y',
     'smaller(x, y)'
diff --git a/lib/expression/docs/function/comparison/smallerEq.js b/lib/expression/docs/function/relational/smallerEq.js
similarity index 93%
rename from lib/expression/docs/function/comparison/smallerEq.js
rename to lib/expression/docs/function/relational/smallerEq.js
index 355764697..f9abe54ac 100644
--- a/lib/expression/docs/function/comparison/smallerEq.js
+++ b/lib/expression/docs/function/relational/smallerEq.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'smallerEq',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'x <= y',
     'smallerEq(x, y)'
diff --git a/lib/expression/docs/function/comparison/unequal.js b/lib/expression/docs/function/relational/unequal.js
similarity index 94%
rename from lib/expression/docs/function/comparison/unequal.js
rename to lib/expression/docs/function/relational/unequal.js
index 60ec7a20d..012153b9c 100644
--- a/lib/expression/docs/function/comparison/unequal.js
+++ b/lib/expression/docs/function/relational/unequal.js
@@ -1,6 +1,6 @@
 module.exports = {
   'name': 'unequal',
-  'category': 'Comparison',
+  'category': 'Relational',
   'syntax': [
     'x != y',
     'unequal(x, y)'
diff --git a/lib/expression/docs/index.js b/lib/expression/docs/index.js
index 19f9aeaf9..a6ad90790 100644
--- a/lib/expression/docs/index.js
+++ b/lib/expression/docs/index.js
@@ -48,15 +48,15 @@ exports.unaryMinus = require('./function/arithmetic/unaryMinus');
 exports.unaryPlus = require('./function/arithmetic/unaryPlus');
 exports.xgcd = require('./function/arithmetic/xgcd');
 
-// functions - comparison
-exports.compare = require('./function/comparison/compare');
-exports.deepEqual = require('./function/comparison/deepEqual');
-exports['equal'] = require('./function/comparison/equal');
-exports.larger = require('./function/comparison/larger');
-exports.largerEq = require('./function/comparison/largerEq');
-exports.smaller = require('./function/comparison/smaller');
-exports.smallerEq = require('./function/comparison/smallerEq');
-exports.unequal = require('./function/comparison/unequal');
+// functions - relational
+exports.compare = require('./function/relational/compare');
+exports.deepEqual = require('./function/relational/deepEqual');
+exports['equal'] = require('./function/relational/equal');
+exports.larger = require('./function/relational/larger');
+exports.largerEq = require('./function/relational/largerEq');
+exports.smaller = require('./function/relational/smaller');
+exports.smallerEq = require('./function/relational/smallerEq');
+exports.unequal = require('./function/relational/unequal');
 
 // functions - complex
 exports.arg = require('./function/complex/arg');
diff --git a/lib/expression/parse.js b/lib/expression/parse.js
index 2d6989e30..7160f5c52 100644
--- a/lib/expression/parse.js
+++ b/lib/expression/parse.js
@@ -542,7 +542,7 @@ function parseBitwiseConditions () {
    var name = token;
 
    getToken();
-   var params = [node, parseComparison()];
+   var params = [node, parseRelational()];
    node = new OperatorNode(name, fn, params);
    }
 
@@ -603,7 +603,7 @@ function parseRange () {
 function parseConditions () {
   var node, operators, name, fn, params;
 
-  node = parseComparison();
+  node = parseRelational();
 
   // TODO: precedence of And above Or?
   // TODO: implement a method for unit to number conversion
@@ -624,7 +624,7 @@ function parseConditions () {
     fn = operators[name];
 
     getToken();
-    params = [node, parseComparison()];
+    params = [node, parseRelational()];
     node = new OperatorNode(name, fn, params);
   }
 
@@ -632,11 +632,11 @@ function parseConditions () {
 }
 
 /**
- * comparison operators
+ * relational operators
  * @return {Node} node
  * @private
  */
-function parseComparison () {
+function parseRelational () {
   var node, operators, name, fn, params;
 
   node = parseAddSubtract();
diff --git a/lib/function/comparison/compare.js b/lib/function/relational/compare.js
similarity index 100%
rename from lib/function/comparison/compare.js
rename to lib/function/relational/compare.js
diff --git a/lib/function/comparison/deepEqual.js b/lib/function/relational/deepEqual.js
similarity index 100%
rename from lib/function/comparison/deepEqual.js
rename to lib/function/relational/deepEqual.js
diff --git a/lib/function/comparison/equal.js b/lib/function/relational/equal.js
similarity index 100%
rename from lib/function/comparison/equal.js
rename to lib/function/relational/equal.js
diff --git a/lib/function/comparison/larger.js b/lib/function/relational/larger.js
similarity index 100%
rename from lib/function/comparison/larger.js
rename to lib/function/relational/larger.js
diff --git a/lib/function/comparison/largerEq.js b/lib/function/relational/largerEq.js
similarity index 100%
rename from lib/function/comparison/largerEq.js
rename to lib/function/relational/largerEq.js
diff --git a/lib/function/comparison/smaller.js b/lib/function/relational/smaller.js
similarity index 100%
rename from lib/function/comparison/smaller.js
rename to lib/function/relational/smaller.js
diff --git a/lib/function/comparison/smallerEq.js b/lib/function/relational/smallerEq.js
similarity index 100%
rename from lib/function/comparison/smallerEq.js
rename to lib/function/relational/smallerEq.js
diff --git a/lib/function/comparison/unequal.js b/lib/function/relational/unequal.js
similarity index 100%
rename from lib/function/comparison/unequal.js
rename to lib/function/relational/unequal.js
diff --git a/lib/math.js b/lib/math.js
index 2180d3eac..b0acbd50a 100644
--- a/lib/math.js
+++ b/lib/math.js
@@ -194,15 +194,15 @@ function factory (config) {
   require('./function/arithmetic/unaryPlus')(math, _config);
   require('./function/arithmetic/xgcd')(math, _config);
 
-  // functions - comparison
-  require('./function/comparison/compare')(math, _config);
-  require('./function/comparison/deepEqual')(math, _config);
-  require('./function/comparison/equal')(math, _config);
-  require('./function/comparison/larger')(math, _config);
-  require('./function/comparison/largerEq')(math, _config);
-  require('./function/comparison/smaller')(math, _config);
-  require('./function/comparison/smallerEq')(math, _config);
-  require('./function/comparison/unequal')(math, _config);
+  // functions - relational
+  require('./function/relational/compare')(math, _config);
+  require('./function/relational/deepEqual')(math, _config);
+  require('./function/relational/equal')(math, _config);
+  require('./function/relational/larger')(math, _config);
+  require('./function/relational/largerEq')(math, _config);
+  require('./function/relational/smaller')(math, _config);
+  require('./function/relational/smallerEq')(math, _config);
+  require('./function/relational/unequal')(math, _config);
 
   // functions - complex
   require('./function/complex/arg')(math, _config);
diff --git a/test/expression/parse.test.js b/test/expression/parse.test.js
index 8959b4575..b1c945912 100644
--- a/test/expression/parse.test.js
+++ b/test/expression/parse.test.js
@@ -906,7 +906,7 @@ describe('parse', function() {
         assert.deepEqual(parseAndEval('false ? 1:2:6'), new Matrix([2,3,4,5,6]));
       });
 
-      it('should respect precedence of comparison operator and conversion operators', function () {
+      it('should respect precedence of equal operator and conversion operators', function () {
         var node = math.parse('a == b to c'); // (a == b) to c
         assert.equal(node.op, 'to');
 
@@ -914,7 +914,7 @@ describe('parse', function() {
         assert.equal(node2.op, 'to');
       });
 
-      it('should respect precedence of conditional operator and comparison operators', function () {
+      it('should respect precedence of conditional operator and relational operators', function () {
         var node = math.parse('a == b ? a > b : a < b');
         assert(node instanceof ConditionalNode);
         assert.equal(node.condition.toString(), 'a == b');
@@ -930,7 +930,7 @@ describe('parse', function() {
         assert.equal(node.falseExpr.toString(), 'c:d');
       });
 
-      it.skip('should respect precedence of range  operator and comparison operators', function () {
+      it.skip('should respect precedence of range  operator and relational operators', function () {
         var node = math.parse('a:b == c:d');
         assert(node instanceof OperatorNode);
         assert.equal(node.params[0].toString(), 'a:b');
diff --git a/test/function/comparison/compare.test.js b/test/function/relational/compare.test.js
similarity index 100%
rename from test/function/comparison/compare.test.js
rename to test/function/relational/compare.test.js
diff --git a/test/function/comparison/deepEqual.test.js b/test/function/relational/deepEqual.test.js
similarity index 100%
rename from test/function/comparison/deepEqual.test.js
rename to test/function/relational/deepEqual.test.js
diff --git a/test/function/comparison/equal.test.js b/test/function/relational/equal.test.js
similarity index 100%
rename from test/function/comparison/equal.test.js
rename to test/function/relational/equal.test.js
diff --git a/test/function/comparison/larger.test.js b/test/function/relational/larger.test.js
similarity index 100%
rename from test/function/comparison/larger.test.js
rename to test/function/relational/larger.test.js
diff --git a/test/function/comparison/largerEq.test.js b/test/function/relational/largerEq.test.js
similarity index 100%
rename from test/function/comparison/largerEq.test.js
rename to test/function/relational/largerEq.test.js
diff --git a/test/function/comparison/smaller.test.js b/test/function/relational/smaller.test.js
similarity index 100%
rename from test/function/comparison/smaller.test.js
rename to test/function/relational/smaller.test.js
diff --git a/test/function/comparison/smallerEq.test.js b/test/function/relational/smallerEq.test.js
similarity index 100%
rename from test/function/comparison/smallerEq.test.js
rename to test/function/relational/smallerEq.test.js
diff --git a/test/function/comparison/unequal.test.js b/test/function/relational/unequal.test.js
similarity index 100%
rename from test/function/comparison/unequal.test.js
rename to test/function/relational/unequal.test.js