The plural form of compilation; more than one (kind of) compilation.

Is compilation singular or plural?

The noun compilation can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be compilation. However, in more specific contexts, the plural form can also be compilations e.g. in reference to various types of compilations or a collection of compilations.

Is compilation countable or uncountable?

(uncountable) The act or process of compiling or gathering together from various sources. (countable) That which is compiled; especially, a book or document composed of materials gathering from other books or documents.