redbone vs hound dog

redbone and hound dog both are nouns.

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

As nouns, hound dog is a hypernym of redbone; that is, hound dog is a word with a broader meaning than redbone:

redbone: a speedy red or red-and-tan American hound
hound dog: any of several breeds of dog used for hunting typically having large drooping ears

Other hypernyms of redbone include hound.

redbone (noun)	hound dog (noun)
a speedy red or red-and-tan American hound	any of several breeds of dog used for hunting typically having large drooping ears