grouper vs coney

grouper and coney both are nouns.

Word	Noun	Adjective	Verb	Adverb
grouper	Yes	No	No	No
coney	Yes	No	No	No

As nouns, coney is a hyponym of grouper; that is, coney is a word with a more specific, narrower meaning than grouper:

grouper (noun)	coney (noun)
usually solitary bottom sea basses of warm seas	black-spotted usually dusky-colored fish with reddish fins
flesh of a saltwater fish similar to sea bass	any of various burrowing animals of the family Leporidae having long ears and short tails; some domesticated and raised for pets or food
	small short-eared burrowing mammal of rocky uplands of Asia and western North America
	any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes