benthic division vs benthos

benthic division and benthos both are nouns.

Word	Noun	Adjective	Verb	Adverb
benthic division	Yes	No	No	No
benthos	Yes	No	No	No

As nouns, benthic division and benthos are synonyms defined as:

benthic division and benthos: a region including the bottom of the sea and the littoral zones

Other synonyms of benthic division include benthonic zone.

benthic division (noun)	benthos (noun)
a region including the bottom of the sea and the littoral zones	organisms (plants and animals) that live at or near the bottom of a sea, lake, river or stream
	a region including the bottom of the sea and the littoral zones