he word "museum" is a noun because it represents a place. A noun is a word that names a person, place, thing, or idea. "Visited" is a verb because it describes an action. "Last" is an adjective modifying "Sunday." "We" is a pronoun but not a noun. Identifying nouns correctly helps in sentence formation and grammar improvement. Learning how to distinguish nouns from other parts of speech is an essential step in mastering the English language.