A pronoun is a word that is used in place of a noun to avoid repetition and make sentences clearer. For instance, instead of saying “Sarah went to Sarah's house,” you can say “Sarah went to her house.” Pronouns help to streamline language and make communication more fluid.
The word "pronoun" comes from the Latin "pronomen," where "pro-" means "for" and "nomen" means "name." Thus, it can be understood as "for a noun."