flying robin vs butterflyfish

flying robin and butterflyfish both are nouns.

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

As nouns, flying robin and butterflyfish are synonyms defined as:

flying robin and butterflyfish: tropical fish with huge fanlike pectoral fins for underwater gliding; unrelated to searobins

Other synonyms of flying robin include flying gurnard.

flying robin (noun)	butterflyfish (noun)
tropical fish with huge fanlike pectoral fins for underwater gliding; unrelated to searobins	tropical fish with huge fanlike pectoral fins for underwater gliding; unrelated to searobins