sweet-talk vs palaver

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

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

As verbs, sweet-talk and palaver are synonyms defined as:

sweet-talk and palaver: influence or urge by gentle urging, caressing, or flattering

Other synonyms of sweet-talk include blarney, cajole, coax, inveigle, wheedle.

sweet-talk (noun)	palaver (noun)
	loud and confused and empty talk
	flattery intended to persuade

sweet-talk (verb)	palaver (verb)
influence or urge by gentle urging, caressing, or flattering	have a lengthy discussion, usually between people of different backgrounds
	influence or urge by gentle urging, caressing, or flattering
	speak (about unimportant matters) rapidly and incessantly