cobia vs percoidean

cobia and percoidean both are nouns.

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

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

cobia: large dark-striped tropical food and game fish related to remoras; found worldwide in coastal to open waters
percoidean: any of numerous spiny-finned fishes of the order Perciformes

Other hypernyms of cobia include percoid, percoid fish.

cobia (noun)	percoidean (noun)
large dark-striped tropical food and game fish related to remoras; found worldwide in coastal to open waters	any of numerous spiny-finned fishes of the order Perciformes