biota vs aggregation

biota and aggregation both are nouns.

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

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

Other hypernyms of biota include accumulation, assemblage, collection.

biota (noun)	aggregation (noun)
all the plant and animal life of a particular region	the act of gathering something together
	several things grouped together or considered as a whole