pork-fish vs grunt

pork-fish and grunt both are nouns.

Word	Noun	Adjective	Verb	Adverb
pork-fish	Yes	No	No	No
grunt	Yes	No	Yes	No

As nouns, grunt is a hypernym of pork-fish; that is, grunt is a word with a broader meaning than pork-fish:

pork-fish: black and gold grunt found from Bermuda to Caribbean to Brazil
grunt: medium-sized tropical marine food fishes that utter grunting sounds when caught

pork-fish (noun)	grunt (noun)
black and gold grunt found from Bermuda to Caribbean to Brazil	medium-sized tropical marine food fishes that utter grunting sounds when caught
	the short low gruff noise of the kind made by hogs
	an unskilled or low-ranking soldier or other worker

pork-fish (verb)	grunt (verb)
	issue a grunting, low, animal-like noise