collection vs aggregation

collection and aggregation both are nouns.

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

As nouns, collection and aggregation are synonyms defined as:

Other synonyms of collection include assembling, collecting.

As nouns, collection and aggregation are synonyms defined as:

collection and aggregation: several things grouped together or considered as a whole

Other synonyms of collection include accumulation, assemblage.

collection (noun)	aggregation (noun)
the act of gathering something together	the act of gathering something together
a publication containing a variety of works	several things grouped together or considered as a whole
request for a sum of money
several things grouped together or considered as a whole