Money is a/an:

An object, location, animal, or person is referred to by a noun. A noun that refers to something that cannot be counted (such as a substance or quality) is an uncountable noun. It typically does not have a plural form and is not used with the indefinite article. These nouns are also called mass nouns. The word money is not a countable noun. Money has no plural form since it works similarly to other uncountable nouns like water, sand, air, and luck.