Nouns

(n)chat, confab, confabulation, schmooze, schmoosean informal conversation
(n)New World chat, chatbirds having a chattering call
(n)Old World chat, chatsongbirds having a chattering call

Verbs

(v)chew the fat, shoot the breeze, chat, confabulate, confab, chitchat, chit-chat, chatter, chaffer, natter, gossip, jaw, claver, visittalk socially without exchanging too much information“the men were sitting in the cafe and shooting the breeze”