Nouns, proper nouns and pronouns

There are three nouns. Nouns, proper nouns and pronouns.

Noun are the words given to an object. For example the following words are all nouns: bat, tv and a chair.

Proper nouns are unique things, for example Samoa. There's only one Samoa. 

Pronouns are the general words given to an objects, person, or group of objects or people. For example the following are all pronouns: she, it, they, he. Those are pronouns.