Question

What are the definition of pronouns

Answer 1

a word that can function by itself as a noun phrase and that refers either to the participants in the discourse (e.g., I, you ) or to someone or something mentioned elsewhere in the discourse (e.g., she, it, this ).
According to google

Answer 2

A pronoun is a word that's used in place of a noun or noun phrase, like “he,” “she,” or “it,”