king of the herring vs oarfish

king of the herring and oarfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
king of the herring	Yes	No	No	No
oarfish	Yes	No	No	No

As nouns, king of the herring and oarfish are synonyms defined as:

king of the herring and oarfish: thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin

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

king of the herring (noun)	oarfish (noun)
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