Nouns

(n)hound, hound dogany of several breeds of dog used for hunting typically having large drooping ears
(n)cad, bounder, blackguard, dog, hound, heelsomeone who is morally reprehensible“you dirty dog”

Verbs

(v)hound, hunt, tracepursue or chase relentlessly“The hunters traced the deer into the woods”, “the detectives hounded the suspect until they found him”