Contrast Macbeth and Lady Macbeth. In what three ways are they different?

Answer 1

The Macbeths’ marriage, like the couple themselves, is atypical, particularly by the standards of its time. Yet despite their odd power dynamic, the two of them seem surprisingly attached to one another, particularly compared to other married couples in Shakespeare’s plays, in which romantic felicity appears primarily during courtship and marriages tend to be troubled. Macbeth offers an exception to this rule, as Macbeth and his wife are partners in the truest sense of the word. Of course, the irony of their “happy” marriage is clear—they are united by their crimes, their mutual madness, and their mounting alienation from the rest of humanity.
Though Macbeth is a brave general and a powerful lord, his wife is far from subordinate to his will. Indeed, she often seems to control him, either by crafty manipulation or by direct order. And it is Lady Macbeth’s deep-seated ambition, rather than her husband’s, that ultimately propels the plot of the play by goading Macbeth to murder Duncan. Macbeth does not need any help coming up with the idea of murdering Duncan, but it seems unlikely that he would have committed the murder without his wife’s powerful taunts and persuasions.

Answer 2

1) He's a boy and she's a girl.
3) He kills a lot of people; she doesn't kill anyone.
2) She kills herself; someone else kills him.

You'll have to actually read and think about the play to come up with others.