A countable noun, also known as a count noun, is a type of noun that refers to objects, people, or entities that can be individually counted as separate units.

Countable nouns have both singular and plural forms, and they can be preceded by numerical quantifiers like “one,” “two,” “three,” or “many.”

For example, “apple” is a countable noun because you can have one apple or multiple apples. Countable nouns contrast with uncountable nouns, which represent things that are considered as a whole and cannot be easily counted, such as “water” or “information.”

Countable nouns are fundamental in English for quantifying and specifying quantities of items or people.