The clapping hands emoji: When used repetitively in a row, it signifies applause, but as any social media user by now understands, that is not the emoji's primary placement in the world of Twitter.

To start, Google’s introducing the heart, thumbs-up, party popper, clap, joy, astonished, thinking, cry, and thumbs-down emoji. It isn’t the full range of emoji reactions that Zoom offers ...