Google Plus and Gmail have the same Chat window, but While using Google Plus chat there is an option called ‘Send Feedback’ that hides the Emoticons Key behind it.

Send Feedback option is permanent, even if we don’t want to send Feedback it stays there and if we wish to use emoticons while chatting than either we have to pop out the chat window or chat in Gmail.

Emoticons doesn’t really make any difference but if we compare Google Plus Chat and Facebook Chat Emoticons Key is the only difference.