Definition & Meaning of "count noun"

What is a "count noun"?

A count noun is a noun that refers to things that can be counted as individual units and can have both singular and plural forms. For example, "book" is a count noun because you can say "one book" or "two books." Count nouns are often paired with numbers or words like "many" and "few" to indicate quantity. In contrast, non-count nouns represent things that cannot be counted individually, like "water." Understanding count nouns is important for recognizing how language distinguishes between singular and plural forms and for determining how to quantify different items.