* The audience knows that Romeo and Juliet are in love, but their families do not. This creates tension and suspense, as the audience wonders how the lovers will be able to overcome the obstacles in their way.
* The audience knows that Juliet has drunk a sleeping potion, but Romeo does not. This leads to Romeo believing that Juliet is dead, and he kills himself. This is a tragic irony, as the audience knows that Juliet is not actually dead, and that Romeo could have been saved if he had only waited a few minutes longer.
* The audience knows that the feud between the Montagues and Capulets is senseless and destructive, but the characters in the story do not. This creates a sense of frustration and anger, as the audience wishes that the characters could see the futility of their actions.
Dramatic irony is a powerful tool that can be used to create a variety of effects in a story. In Romeo and Juliet, dramatic irony is used to create suspense, tension, tragedy, and a sense of frustration.