corpus vs accumulation

corpus and accumulation both are nouns.

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

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

Other hypernyms of corpus include aggregation, assemblage, collection.

corpus (noun)	accumulation (noun)
the main part of an organ or other bodily structure	the act of accumulating
a collection of writings	several things grouped together or considered as a whole
capital as contrasted with the income derived from it	(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