black sea bass vs black bass

black sea bass and black bass both are nouns.

Word	Noun	Adjective	Verb	Adverb
black sea bass	Yes	No	No	No
black bass	Yes	No	No	No

As nouns, black sea bass and black bass are synonyms defined as:

black sea bass and black bass: bluish black-striped sea bass of the Atlantic coast of the United States

Other synonyms of black sea bass include Centropistes striata.

black sea bass (noun)	black bass (noun)
bluish black-striped sea bass of the Atlantic coast of the United States	widely distributed and highly prized American freshwater game fishes (sunfish family)
	bluish black-striped sea bass of the Atlantic coast of the United States