Scorpionfish and Scorpaenid

Scorpionfish noun - Marine fishes having a tapering body with an armored head and venomous spines.

Scorpaenid and scorpionfish are semantically related. In some cases you can use "Scorpaenid" instead a noun "Scorpionfish".

Scorpaenid noun - Any of numerous carnivorous usually bottom-dwelling warm-water marine fishes found worldwide but most abundant in the Pacific.

Scorpionfish and scorpaenid are semantically related. Sometimes you can replace term "Scorpionfish" with "Scorpaenid", this nouns are similar.