What is a noun and a pronoun and adjective

A noun is a person place or thing. An adjective is a describing word and a pronoun is A word or form that substitutes for a noun or noun phrase.

Examples:

Noun: New York, Brad Pitt, dog.

Pronoun: she, he, it.

Adjective: flustered, beautiful, amazing.

Noun is something like place, animal etc, pronoun is cutting off a name and putting he or she instead. Adjective mean something that describes tired example rose is red. Red is the adjective