What are Singular and Plural Nouns? We use singular and plural nouns to tell how many of a noun are in a sentence. Singular nouns mean there is one person, place, or thing. For example, the word house means one house. Plural nouns mean there is more than one person, place, or thing. For example, houses means more than one house. Plural nouns don’t tell us how many. They simply mean there is more than one. If I say I have sisters, I could have two sisters, or I could have twenty sisters! Here is