Asides are often used in Shakespearean plays, where they are known as "soliloquies." Soliloquies are usually longer than asides, and they are typically delivered by a character alone on stage. Soliloquies allow the character to share their innermost thoughts and feelings with the audience, and they can be used to reveal important information about the character or the plot.
Asides and soliloquies can be an effective way to add depth and complexity to a play or film. They can allow the audience to get to know the characters on a deeper level, and they can help to create a sense of intimacy between the characters and the audience.