Walk-on and Walk on

Walk-on noun - Plays a small part in a dramatic production.

Walk on and walk-on are semantically related In some cases you can use "Walk on" instead a noun phrase "Walk-on".

Walk-on and walk on are semantically related in minor role topic. You can use "Walk-on" instead a noun "Walk on", if it concerns topics such as theatrical role, impersonation of a character, person who performs, person who acts in performance.