sweet-talk vs bully

sweet-talk is not a noun while bully is a noun.

Word	Noun	Adjective	Verb	Adverb
sweet-talk	No	No	Yes	No
bully	Yes	Yes	Yes	No

As verbs, bully is a hyponym of sweet-talk; that is, bully is a word with a more specific, narrower meaning than sweet-talk:

sweet-talk: influence or urge by gentle urging, caressing, or flattering
bully: discourage or frighten with threats or a domineering manner; intimidate

Other hyponyms of sweet-talk include soft-soap, browbeat, swagger.

sweet-talk (noun)	bully (noun)
	a cruel and brutal fellow
	a hired thug

sweet-talk (adjective)	bully (adjective)
	excellent

sweet-talk (verb)	bully (verb)
influence or urge by gentle urging, caressing, or flattering	discourage or frighten with threats or a domineering manner; intimidate
	be bossy towards