hunting dog vs hound

hunting dog and hound both are nouns.

Word	Noun	Adjective	Verb	Adverb
hunting dog	Yes	No	No	No
hound	Yes	No	Yes	No

As nouns, hound is a hyponym of hunting dog; that is, hound is a word with a more specific, narrower meaning than hunting dog:

hunting dog: a dog used in hunting game
hound: any of several breeds of dog used for hunting typically having large drooping ears

hunting dog (noun)	hound (noun)
a dog used in hunting game	any of several breeds of dog used for hunting typically having large drooping ears
	someone who is morally reprehensible

hunting dog (verb)	hound (verb)
	pursue or chase relentlessly