Small typos corrections.

functions/higher_order.md

@@ -35,7 +35,7 @@ map(double, [5,6,7]) // => [10, 12, 14]
 
 The functions in the above example are simple. However, when passed as arguments to other functions, they can be composed in unforeseen ways to build more complex functions.
 
-For example, if we notice that we use the invocations `map(add_2, ...)` and `map(double, ...)` very often in our code, we could decide we want to create two special-purpse list processing functions that have the desired operation baked into them. Using function composition, we could do this as follows:
+For example, if we notice that we use the invocations `map(add_2, ...)` and `map(double, ...)` very often in our code, we could decide we want to create two special-purpose list processing functions that have the desired operation baked into them. Using function composition, we could do this as follows:
 
 ```javascript
 process_add_2 = function(list) {

objects/prototype.md

@@ -15,7 +15,7 @@ var stringRepresentation = adult.toString();
  // the variable has value of '[object Object]'
 ```
 
-`toString` is an Object.prototype's property, which was inhereted. It has a value of a function, which returns a string representation of the object. If you want it to return a more meaningful representation, then you can override it. Simply add a new property to the adult object.
+`toString` is an Object.prototype's property, which was inherited. It has a value of a function, which returns a string representation of the object. If you want it to return a more meaningful representation, then you can override it. Simply add a new property to the adult object.
 
 ```js
 adult.toString = function(){