A person who writes movie reviews for the press.
Critic
A person in a movie who has a small unimportant part
Extra
The words of the movie
Script
The story of a movie
Plot
Images often created by a computer
Special effects
All the people who act in a movie
Cast
The place where a movie is being shot; the scenery used for a movie or play.
Set
The people who watch a movie in a movie theater
Audience
The most important actor or actress in a movie (also verb)
Star
A part of a movie happening in one place
Scene
A series of short scenes from a movie, shown in advance to advertise it.
Trailer
The article that gives an opinion on a new movie, book, etc.
Review
The music of a movie
Soundtrack
A movie that continues the story of an earlier movie
Sequel
The translation of the dialogue into another language
Subtitles