Countable and Uncountable Nouns
English Grammar A1 Level: Nouns refer to a person, place, thing, event, substance or quality. Countable nouns are nouns considered as separate objects that can be counted with numbers. Uncountable nouns refer to things we consider as a mass, and not as separate objects. https://open.books4languages.com/english-a1-grammar/chapter/countable-and-uncountable-nouns