A body double is someone who takes the place of an actor or actress during scenes that require extensive physical or dangerous actions. However, there are other terms that are used interchangeably with body double. For example, a stunt double performs physically difficult or risky stunts in place of the actor or actress. A stand-in is someone who replaces the actor for the purpose of lighting and camera placement during rehearsals or filming. A photo double or a body match double is hired specifically to match the physical appearance of the actor or actress in a certain scene. Ultimately, whatever the term used, the goal is to create a seamless flow of the scene while ensuring the safety of the actors.