What is the opposite of countable nouns?

Nouns are an integral part of English grammar. They are used to express ideas, concrete things, locations, or people. Countable nouns refer to individuals, places, and things that can be counted, whereas Uncountable nouns refer to those that cannot be numbered. Countable nouns can be solitary or plural and frequently use the articles an or an, unlike uncountable nouns. Thus, countable and uncountable nouns are opposites.