go after vs hound

go after is not a noun while hound is a noun.

Word	Noun	Adjective	Verb	Adverb
go after	No	No	Yes	No
hound	Yes	No	Yes	No

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

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

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

go after (verb)	hound (verb)
go in search of or hunt for	pursue or chase relentlessly
go after with the intent to catch