Question

1. what is the definition of a noun? a word that names a person, place, or thing a word that expresses emotion a word that replaces another word or phrase a word that describes action, existence, or occurrence

Explanation:

A noun is a fundamental part - of - speech that names a person (e.g., John), place (e.g., park), or thing (e.g., book). The option "a word that expresses emotion" is an interjection, "a word that replaces another word or phrase" is a pronoun, and "a word that describes action, existence, or occurrence" is a verb.

Answer:

a word that names a person, place, or thing