aviation vs aggregation

aviation and aggregation both are nouns.

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

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

Other hypernyms of aviation include accumulation, assemblage, collection.

aviation (noun)	aggregation (noun)
travel via aircraft	the act of gathering something together
the art of operating aircraft	several things grouped together or considered as a whole
the aggregation of a country's military aircraft
the operation of aircraft to provide transportation