nekton vs conglomeration

nekton and conglomeration both are nouns.

Word	Noun	Adjective	Verb	Adverb
nekton	Yes	No	No	No
conglomeration	Yes	No	No	No

nekton (noun)	conglomeration (noun)
the aggregate of actively swimming animals in a body of water ranging from microscopic organisms to whales	an occurrence combining miscellaneous things into a (more or less) rounded mass
	a sum total of many heterogenous things taken together
	a rounded spherical form