The proscenium arch stage is so named due to the proscenium arch which separates the stage from the auditorium.
stage
stage
auditorium
Proscenium
Vets Auditorium
An auditorium is basily a stage. An auditorium is used for plays, concerts, graduations, gatherings, performances, and more
An orchestra can play in a variety of places: * an auditorium * on stage in a theater * on stage at a music hall * outdoors * in a church
The noun 'auditorium' is a singular, common, concrete noun; a word for a large building or space in a building used for public gatherings, such as speeches or stage performances; a word for a thing.
Usually you go so by going through the backstage area; in some cases, there may be steps up from the house floor. Without knowing which particular auditorium you're talking about, it's difficult to be more specific.
the stage is called cytokinesis
The plural of auditorium is auditoriums.