What is the term for a word that replaces a noun in a sentence?

A pronoun is a word that stands in for a noun, often to avoid the need to repeat the same noun over and over. Like nouns, pronouns can refer to people, things, concepts, and places. Most sentences contain at least one noun or pronoun. People tend to use “pronouns” to mean personal pronouns specifically, but there are many other kinds of pronouns that are just as important to English grammar.

Source: Scribbr