Be on and Ham it up

Be on verb - Appear in a show, on T.V. or radio.

Ham it up and be on are semantically related. in act topic. In some cases you can use "Ham it up" instead a verb phrase "Be on", when it comes to topics like entertain by playing a role.

Ham it up verb - Exaggerate one's acting.

Be on and ham it up are semantically related. You can use "Be on" instead a verb "Ham it up".