Small talk; light, casual conversation or gossip about everyday topics.
待合室で初対面の人と世間話をした。
I made small talk with someone I met for the first time in the waiting room.
休憩中に同僚と世間話をしてリラックスした。
I relaxed by having a chat with a colleague during the break.
上司との世間話が打ち解けるきっかけになった。
Small talk with my boss became a chance to become closer.