Objects

What is OBJECT? Is it different from NOUN?

Nouns may function as Objects in sentences.

Subjects do the action and objects receive it.

See the following example:
1.  Diaz kicks the ball  
Diaz is the subject, because she does the action.
Kicks is the verb, it is the action.
While ball is the object, it receives the action, kick. 

Pronouns may also function as objects, as following:
1.  I cooked chicken soup this morning, my mom likes it very much.

The common object pronouns are me, you, them, us, him, her, and it