A playwright writes a play.
A play is a form of literature that is meant to be performed on stage. It typically features dialogue between characters and may also include stage directions, descriptions of settings, and other details that help bring the story to life. The playwright is the author of the play, responsible for creating the characters, plot, and dialogue.
While the playwright may also be involved in other aspects of producing the play, such as directing or producing, their primary role is as the writer of the script. The play is then performed by actors, under the direction of a director, in front of an audience.
In summary, the playwright is the creative mind behind a play, responsible for crafting the story and characters that make up the script.