flying robin vs scorpaenoid

flying robin and scorpaenoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
flying robin	Yes	No	No	No
scorpaenoid	Yes	No	No	No

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

flying robin: 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 flying robin include scorpaenoid fish.

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