dog vs hound

dog and hound both are nouns.

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

As nouns, dog and hound are synonyms defined as:

Other synonyms of dog include blackguard, bounder, cad, heel.

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

Other hyponyms of dog include tree, quest, hunt, trace, run down.

dog (noun)	hound (noun)
a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds	any of several breeds of dog used for hunting typically having large drooping ears
a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward	someone who is morally reprehensible
metal supports for logs in a fireplace
a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll
informal term for a man
a dull unattractive unpleasant girl or woman
someone who is morally reprehensible

dog (verb)	hound (verb)
go after with the intent to catch	pursue or chase relentlessly