confabulation

argument, argumentation, back-and-forth, colloquy, confab, conference, consult, consultation, council, counsel, debate, deliberation, dialogue (also dialog), discussion, give-and-take, palaver, parley, talk

backchat, cackle, chat, chatter, chitchat, confab, gab, gabfest, gossip, jangle, jaw, palaver, patter, rap, schmooze, small talk, table talk, talk, tête-à-tête