corpus vs aggregation

corpus and aggregation both are nouns.

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

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

Other hypernyms of corpus include accumulation, assemblage, collection.

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