fauna vs accumulation

fauna and accumulation both are nouns.

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

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

Other hypernyms of fauna include aggregation, assemblage, collection.

fauna (noun)	accumulation (noun)
a living organism characterized by voluntary movement	the act of accumulating
all the animal life in a particular region or period	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