gimmickry vs aggregation

gimmickry and aggregation both are nouns.

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

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

Other hypernyms of gimmickry include accumulation, assemblage, collection.

gimmickry (noun)	aggregation (noun)
a collection of gimmicks	the act of gathering something together
	several things grouped together or considered as a whole