collage vs collection

collage and collection both are nouns.

Word	Noun	Adjective	Verb	Adverb
collage	Yes	No	No	No
collection	Yes	No	No	No

As nouns, collection is a hypernym of collage; that is, collection is a word with a broader meaning than collage:

Other hypernyms of collage include accumulation, aggregation, assemblage.

collage (noun)	collection (noun)
a paste-up made by sticking together pieces of paper or photographs to form an artistic image	the act of gathering something together
any collection of diverse things	a publication containing a variety of works
	request for a sum of money
	several things grouped together or considered as a whole