IPA: /kəmˈpaɪləʃən/
KK: /kəmˈpaɪləˌʃən/
A collection of items, such as data, reports, or works, that have been gathered and organized together.
The album is a compilation of the band's greatest hits.
Compilation → It is formed from "com-" (meaning together) and "pulsare" (meaning to drive or push). The word refers to the act of bringing together various elements or works into a single collection.
Think of bringing things 'together' ('com-') that are 'driven' or 'pushed' ('pulsare') into one collection — that's what compilation means.