A noun is a word for a person, a place, or a thing.A verb is a word for an action or a state of being.An adjective is a word used to describe a noun.A pronoun is a word that takes the place of a noun in a sentence.Example functions:I rode my new bicycle. It was a gift form my father.the word 'bicycle' s a noun, a word for a thing.the word 'gift' is a noun, a word for a thing.The word 'father' is a noun, a word for a person.The word 'rode' is a verb, a word for an action.The word 'was' is a verb, a word for a state of being.The word 'new' is an adjective that describes the noun 'bicycle'.The word 'I' is a pronoun, a word that takes the place of a noun for the person speaking.The word 'it' is a pronoun, a word that takes the place of the noun 'bicycle'.The word 'my' is a pronoun, a word that takes the place of a possessive noun for the person speaking.