Scene: Continuous action at one time. Examples include: a love scene, a chase scene, an investigation scene
The Set: The things that are shown in a scene. For example, a living room and all the things in it where the characters interact
Producer: The person or organization that gets the money that is needed to make a movie
Director: The person who is in charge of making the movie, including choosing the actors and actresses, telling them what to say, choosing where to film, what the sets look like, and what the characters should wear
Cast: The people who are shown in a movie
Crew: The workers who are not shown in a movie, including the people who build the sets, make the clothes that are warn by the characters, get the city permits that are required to shoot the movie, organize lunch, etc.