A screenplay, or script, is a written work by screenwriters for a film, television program, or video game. These screenplays can be original works or adaptations from existing pieces of writing. In them, the movement, actions, expression and dialogues of the characters are also narrated. A screenplay written for television is also known as a teleplay.

A teleplay is a screenplay or script used in the production of a scripted television program or series. In general usage, the term is most commonly seen in reference to a standalone production, such as a television film, a television play, or an episode of an anthology series. In internal industry usage, however, all television scripts (including episodes of ongoing drama or comedy series) are teleplays, although a “teleplay” credit may be subsumed into a “written by” credit depending on the circumstances of its creation.