jewfish vs sciaenid

jewfish and sciaenid both are nouns.

Word	Noun	Adjective	Verb	Adverb
jewfish	Yes	No	No	No
sciaenid	Yes	No	No	No

As nouns, sciaenid is a hypernym of jewfish; that is, sciaenid is a word with a broader meaning than jewfish:

jewfish: large important food fish of Australia; almost indistinguishable from the maigre
sciaenid: widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound

Other hypernyms of jewfish include sciaenid fish.

jewfish (noun)	sciaenid (noun)
large dark grouper with a thick head and rough scales	widely distributed family of carnivorous percoid fishes having a large air bladder used to produce sound
large important food fish of Australia; almost indistinguishable from the maigre