benthos vs benthic division

benthos and benthic division both are nouns.

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

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

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

Other synonyms of benthos include benthonic zone.

benthos (noun)	benthic division (noun)
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
a region including the bottom of the sea and the littoral zones