assortment vs collection

assortment and collection both are nouns.

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

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

Other hypernyms of assortment include accumulation, aggregation, assemblage.

assortment (noun)	collection (noun)
the act of distributing things into classes or categories of the same type	the act of gathering something together
a collection containing a variety of sorts of things	a publication containing a variety of works
	request for a sum of money
	several things grouped together or considered as a whole