cumulation vs aggregation

cumulation and aggregation both are nouns.

Word	Noun	Adjective	Verb	Adverb
cumulation	Yes	No	No	No
aggregation	Yes	No	No	No

As nouns, aggregation is a hypernym of cumulation; that is, aggregation is a word with a broader meaning than cumulation:

Other hypernyms of cumulation include accumulation, assemblage, collection.

cumulation (noun)	aggregation (noun)
a collection of objects laid on top of each other	the act of gathering something together
	several things grouped together or considered as a whole