gather vs aggregation

gather and aggregation both are nouns.

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

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

Other hypernyms of gather include assembling, collecting, collection.

gather (noun)	aggregation (noun)
the act of gathering something	the act of gathering something together
sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching	several things grouped together or considered as a whole

gather (verb)	aggregation (verb)
increase in amount by collecting or gathering
increase or develop
conclude from evidence
assemble or get together
draw together into folds or puckers
look for (food) in nature
draw and bring closer
collect in one place
get people together