Barge in and Pop-up

Barge in verb - Enter uninvited; informal.

Pop-up and barge in are semantically related. In some cases you can replace phrase "Pop-up" with "Barge in", this terms are similar.

Pop-up noun - A short high fly ball.

Barge in and pop-up are semantically related. Sometimes you can use "Barge in" instead a verb phrase "Pop-up".