lionfish vs scorpaenid fish

lionfish and scorpaenid fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
lionfish	Yes	No	No	No
scorpaenid fish	Yes	No	No	No

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

lionfish: brightly striped fish of the tropical Pacific having elongated spiny fins
scorpaenid fish: any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific

Other hypernyms of lionfish include scorpaenid.

lionfish (noun)	scorpaenid fish (noun)
brightly striped fish of the tropical Pacific having elongated spiny fins	any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific