sea bass vs serranid

sea bass and serranid both are nouns.

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

As nouns, serranid is a hypernym of sea bass; that is, serranid is a word with a broader meaning than sea bass:

sea bass: any of various food and sport fishes of the Atlantic coast of the United States having an elongated body and long spiny dorsal fin
serranid: marine food sport fishes mainly of warm coastal waters

Other hypernyms of sea bass include food fish, serranid fish.

sea bass (noun)	serranid (noun)
any of various food and sport fishes of the Atlantic coast of the United States having an elongated body and long spiny dorsal fin	marine food sport fishes mainly of warm coastal waters
the lean flesh of a saltwater fish of the family Serranidae