conchology vs collection

conchology and collection both are nouns.

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

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

Other hypernyms of conchology include aggregation, assembling, collecting, malacology.

conchology (noun)	collection (noun)
the collection and study of mollusc shells	the act of gathering something together
	a publication containing a variety of works
	request for a sum of money
	several things grouped together or considered as a whole