stonefish vs scorpaenid

stonefish and scorpaenid both are nouns.

Word	Noun	Adjective	Verb	Adverb
stonefish	Yes	No	No	No
scorpaenid	Yes	No	No	No

As nouns, scorpaenid is a hypernym of stonefish; that is, scorpaenid is a word with a broader meaning than stonefish:

stonefish: venomous tropical marine fish resembling a piece of rock
scorpaenid: any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific

Other hypernyms of stonefish include scorpaenid fish.

stonefish (noun)	scorpaenid (noun)
venomous tropical marine fish resembling a piece of rock	any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific