Curiosity Killed the Cat
The Death of Macbeth Due to Macbeth
Irony is at use in the play as well, for when Macbeth has Banquo killed, Macbeth says that, "I wish your horses swift and sure of foot, And so I do commend you to their backs. Farewell" (Shakespeare Act 3 Scene 1). Macbeth doesn't really want Banquo back safely. Really Macbeth doesn't ever want to see Banquo alive again.
Lastly in this play is analogy. The analogy is shown when the witches recite, "Fair is foul, and foul is fair Hover through the fog and filthy air" (Shakespeare Act 1, Scene 1). This analogy means that you get what you deserve and deserve what you get. The witches did not place any bad doings in Macbeth. The witches only fueled what was already there. Therefore Macbeth got what he was already deserving of.