armamentarium vs accumulation

armamentarium and accumulation both are nouns.

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

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

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

Other hypernyms of armamentarium include aggregation, assemblage, collection.

armamentarium (noun)	accumulation (noun)
the collection of equipment and methods used in the practice of medicine	the act of accumulating
	several things grouped together or considered as a whole
	(finance) profits that are not paid out as dividends but are added to the capital base of the corporation
	an increase by natural growth or addition