Definition:A script is a document that shows how characters will interact with eachother through speaking,their body language and detailing what they will be doing. Includes dialogue , instructions for the actors,directions for filming and more.
Scripts are used mainly for people to read for adverts,movies,or maybe even a radio broadcast. A script includes things such as the character name that’s speaking, location/scenery(if it is for a visual project), camera angles/shots/movements. When a person/character is inside or outside you would include either `Ext.` If a they are outside and `Int.` If they a inside.