1) An informal conversation 2) Chat 3) Confab 4) Confabulation 5) Conversation 6) Converse casually 7) Gossip 8) Gossip over coffee 9) Schmoose 1) Causerie 2) Chat 3) Chitchat 4) Confab 5) Confabulation 6) Gab 7) Gabfest 8) Gossip 9) Hobnob 10) Mingle 11) Schmoose 12) Shmoose 13) Yak 
[English words of Yiddish origin] to converse informally, make small talk or chat (from Yiddish שמועסן shmuesn 'converse', from Hebrew shəmūʿōth 'reports, gossip')
Schmooze is American slang for to chat or gossip.
talk idly or casually and in a friendly way