The title Dark Lord of the Sith is often thought to be synonymous with the title Darth. Contrary to this, however, is the fact that Sith apprentices have been known to carry the title as well. Two examples would be Darth Malak as Darth Revan's apprentice, and Darth Vader as Darth Sidious's. Many Sith Lords have used the Darth title, but there is no evidence as to the synonymic relationship of these two appellations.