stromateid vs percoidean

stromateid and percoidean both are nouns.

Word	Noun	Adjective	Verb	Adverb
stromateid	Yes	No	No	No
percoidean	Yes	No	No	No

As nouns, percoidean is a hypernym of stromateid; that is, percoidean is a word with a broader meaning than stromateid:

stromateid: small marine fish with a short compressed body and feeble spines
percoidean: any of numerous spiny-finned fishes of the order Perciformes

Other hypernyms of stromateid include percoid, percoid fish.

stromateid (noun)	percoidean (noun)
small marine fish with a short compressed body and feeble spines	any of numerous spiny-finned fishes of the order Perciformes