cottonwick vs grunt

cottonwick and grunt both are nouns.

Word	Noun	Adjective	Verb	Adverb
cottonwick	Yes	No	No	No
grunt	Yes	No	Yes	No

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

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

cottonwick (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

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