compilation vs collecting

compilation and collecting both are nouns.

Word	Noun	Adjective	Verb	Adverb
compilation	Yes	No	No	No
collecting	Yes	No	No	No

As nouns, collecting is a hypernym of compilation; that is, collecting is a word with a broader meaning than compilation:

Other hypernyms of compilation include aggregation, assembling, collection.

compilation (noun)	collecting (noun)
the act of compiling (as into a single book or file or list)	the act of gathering something together
something that is compiled (as into a single book or file)