WordNet sense 1 (flattery intended to persuade):

blandishment, cajolery

WordNet sense 2 (loud and confused and empty talk):

rhetoric, hot air, empty talk, empty words

WordNet sense 3 (speak (about unimportant matters) rapidly and incessantly):

blab, blabber, chatter, clack, gabble, gibber, maunder, piffle, prate, prattle, tattle, tittle-tattle, twaddle

WordNet sense 4 (influence or urge by gentle urging, caressing, or flattering):

blarney, cajole, coax, inveigle, sweet-talk, wheedle, coax