stromateid vs percoid

stromateid and percoid both are nouns.

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

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

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

Other hypernyms of stromateid include percoid fish, percoidean.

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