High-five and Open up

High-five noun - A gesture of greeting or elation; one person's upraised palm slaps the upraised palm of another person.

Open up and high-five are semantically related. In some cases you can use "Open up" instead a verb phrase "High-five".

Open up verb - Cause to open or to become open.

High-five and open up are semantically related. Sometimes you can use "High-five" instead a verb "Open up".