Haemulon malanurum vs grunt

Haemulon malanurum and grunt both are nouns.

Word	Noun	Adjective	Verb	Adverb
Haemulon malanurum	Yes	No	No	No
grunt	Yes	No	Yes	No

As nouns, grunt is a hypernym of Haemulon malanurum; that is, grunt is a word with a broader meaning than Haemulon malanurum:

Haemulon malanurum: of warm Atlantic waters
grunt: medium-sized tropical marine food fishes that utter grunting sounds when caught

Haemulon malanurum (noun)	grunt (noun)
of warm Atlantic waters	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

Haemulon malanurum (verb)	grunt (verb)
	issue a grunting, low, animal-like noise