Drama or Play is a story re-created by actors on the stage in front of an audience.
Yes! A drama is a type of play! A drama is when actor/actress is dramatic.
I think it is the director, because helpful opinions would improve the play. Next time, you schouldn't let other people answer it for you.
I believe it is called the backdrop.
A drama is a play. That's what the word "drama" means in Greek.