Backstage is the area of a theater that is hidden from the audience where props are kept, actors change into costume, etc.
The cast of a theatrical performance is the group of actors involved in it.
The costumes of a theatrical performance are the outfits worn by the actors when they are performing their roles.
Cues are signals to actors that serve to let them know when it’s their turn to perform.
Props are items used in theatrical performances to make the scene look more realistic and authentic.
Wings are the offstage areas on either side of the stage.