Flies and Tent-fly

Flies noun - Theater) the space over the stage (out of view of the audience) used to store scenery (drop curtains.

Tent-fly is a synonym for flies. In some cases you can use "Tent-fly" instead a noun "Flies".

Tent-fly noun - Flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent.

Flies is a synonym for tent-fly. Sometimes you can replace term "Flies" with "Tent-fly", this terms are similar.