They make the words come alive for their audiences. Actors entertain and communicate with people through their interpretation of dramatic roles.
Actors read scripts and decide how they want to interpret their role.
Then they discuss their ideas with directors and voice coaches on how to portray their characters. They rely on facial and verbal expression as well as body motion for creative effect. In some roles, they sing and dance. They also may use props and costumes to help communicate their ideas. Actors memorize lines and stage directions.