scorpaenid vs stonefish

scorpaenid and stonefish both are nouns.

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

As nouns, stonefish is a hyponym of scorpaenid; that is, stonefish is a word with a more specific, narrower meaning than scorpaenid:

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

Other hyponyms of scorpaenid include scorpion fish, scorpionfish, sea scorpion, lionfish, Synanceja verrucosa, rockfish.

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