babble, blab, cackle, chaffer(British), chat, chatter, chin(slang), converse, gab, gabble, gas, jabber, jaw, kibitz(also kibbitz), natter, palaver, patter, prate, prattle, rap, rattle, run on, schmooze(or shmooze), talk, twitter, visit

gossip, tattledescant, discuss, expatiateyak(also yack), yammer, yap

blow smoke, shoot the breeze, talk a blue streak