butterflyfish vs flying robin

butterflyfish and flying robin both are nouns.

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

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

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

Other synonyms of butterflyfish include flying gurnard.

butterflyfish (noun)	flying robin (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