In the performing arts industry such as theatre, film, or television, a casting (or casting call) is a pre-production process for selecting a certain type of actor, dancer, singer, or extra for a particular role or part in a script, screenplay, or teleplay.
Movie Casting Calls & Auditions

Movie Scripts and Screenplays
Extra News Media Limited

Script” is the most general of the three terms, and is not reserved for any specific type of media. “Screenplay” specifically refers to the script of a film or television program.
A screenplay is a written work that outlines a movie or television show, detailing visual and narrative elements. It's a form of narration that includes character actions, dialogue, and scene descriptions, providing a blueprint for filmmaking. While the terms "script" and "screenplay" are often used interchangeably, a screenplay is generally considered a more complete and detailed version of a script, ready for production.
Film Reels Archives
By archival film it means a high quality photographic film which is suitable for permanent preservation when kept under archival storage conditions.
New Movie First Clap
A clapperboard is a device used in filmmaking
and video production to assist in synchronizing of picture and sound, and to designate and mark the various scenes and takes as they are filmed and audio-recorded.