Stage directions are notes that provide information about the setting, characters, and actions of a play. They are written in brackets ([ ]) and are usually located at the beginning of a scene or act, or before a character's entrance or exit. Stage directions can include information about the time and place of a scene, the characters involved, their movements, gestures, and facial expressions, and the overall mood or atmosphere of a scene.
Dialogue is the spoken part of a play. It consists of the words spoken by the characters in a play. Dialogue is used to advance the plot, develop the characters, and create conflict and tension.