noun
Casual noun for talking or chatting; often used in everyday conversation.
彼はしゃべりが上手だ。
He is a good talker.
友達とのしゃべりが楽しい。
Chatting with friends is fun.
おしゃべり can mean 'chatter' or 'chatting' as a noun, and also 'talkative' as an adjective; しゃべり is more neutral and simply refers to the act of talking.
Derived from the verb しゃべる (to talk, to chat). The exact origin of しゃべる is uncertain, but it is likely a mimetic or sound-symbolic word.