ribbonfish vs oarfish

ribbonfish and oarfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
ribbonfish	Yes	No	No	No
oarfish	Yes	No	No	No

As nouns, ribbonfish and oarfish are synonyms defined as:

ribbonfish and oarfish: thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin

Other synonyms of ribbonfish include king of the herring, Regalecus glesne.

ribbonfish (noun)	oarfish (noun)
marine fish having a long compressed ribbonlike body	thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin
thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin