armamentarium vs collection

armamentarium and collection both are nouns.

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

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

armamentarium: the collection of equipment and methods used in the practice of medicine
collection: several things grouped together or considered as a whole

Other hypernyms of armamentarium include accumulation, aggregation, assemblage.

armamentarium (noun)	collection (noun)
the collection of equipment and methods used in the practice of medicine	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