Judaica vs aggregation

Judaica and aggregation both are nouns.

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

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

Other hypernyms of Judaica include accumulation, assemblage, collection.

Judaica (noun)	aggregation (noun)
materials relating to Judaism	the act of gathering something together
	several things grouped together or considered as a whole