oysterfish vs toadfish

oysterfish and toadfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
oysterfish	Yes	No	No	No
toadfish	Yes	No	No	No

As nouns, toadfish is a hypernym of oysterfish; that is, toadfish is a word with a broader meaning than oysterfish:

oysterfish: a variety of toadfish
toadfish: bottom-dwelling fish having scaleless slimy skin and a broad thick head with a wide mouth

Other hypernyms of oysterfish include Opsanus tau.

oysterfish (noun)	toadfish (noun)
a variety of toadfish	bottom-dwelling fish having scaleless slimy skin and a broad thick head with a wide mouth