Definitionen
1.AdjectiveCapable of being counted; having a quantity.
2.AdjectiveFinite or countably infinite; having a one-to-one correspondence (bijection) with a subset of the natural numbers.
3.AdjectiveCountably infinite; having a bijection with the natural numbers.
4.AdjectiveFreely usable with the indefinite article and with numbers.
5.NounA noun that is countable.