butterflyfish vs scorpaenoid

butterflyfish and scorpaenoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
butterflyfish	Yes	No	No	No
scorpaenoid	Yes	No	No	No

As nouns, scorpaenoid is a hypernym of butterflyfish; that is, scorpaenoid is a word with a broader meaning than butterflyfish:

butterflyfish: tropical fish with huge fanlike pectoral fins for underwater gliding; unrelated to searobins
scorpaenoid: fishes having the head armored with bony plates

Other hypernyms of butterflyfish include scorpaenoid fish.

butterflyfish (noun)	scorpaenoid (noun)
tropical fish with huge fanlike pectoral fins for underwater gliding; unrelated to searobins	fishes having the head armored with bony plates