bottle collection vs collection

bottle collection and collection both are nouns.

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

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

Other hypernyms of bottle collection include aggregation, assembling, collecting.

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

Other hypernyms of bottle collection include accumulation, aggregation, assemblage.

bottle collection (noun)	collection (noun)
the activity of collecting bottles	the act of gathering something together
collecting bottles for reuse	a publication containing a variety of works
a collection of bottles	request for a sum of money
	several things grouped together or considered as a whole