Answer: The biggest difference between Le Morte d'Arthur and Sir Gawain and the Green Knight lies in their respective portrayals of chivalry. Sir Gawain and the Green Knight, a much earlier work than Le Morte d'Arthur, presents us with a very powerful ideal of chivalry in all its purity. But in Malory's later work, we see an erosion of the chivalric ideal, which ultimately leads to the fall of the Round Table.
