blather vs palaver

blather and palaver both are nouns.

Word	Noun	Adjective	Verb	Adverb
blather	Yes	No	Yes	No
palaver	Yes	No	Yes	No

As verbs, palaver is a hypernym of blather; that is, palaver is a word with a broader meaning than blather:

Other hypernyms of blather include blab, blabber, chatter, clack, gabble, gibber, maunder, piffle, prate, prattle, tattle, tittle-tattle, twaddle.

blather (noun)	palaver (noun)
foolish gibberish	loud and confused and empty talk
	flattery intended to persuade

blather (verb)	palaver (verb)
to talk foolishly	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