Countable
Countable nouns have plurals and can be used with a/an.
Potato is a countable noun. You can have a potato and potatoes.
Uncountable
Uncountable nouns have no plurals, and cannot normally be used with a/an.
Sugar is an uncountable noun. You cannot have a sugar or sugars.
Are these nouns countable or uncountable?
Lesson by Amanda, EC Cape Town English school