Aladdin and Ali Baba are two Arabian folktales that share some similarities but also have differences. Both stories involve magical caves filled with riches, though the caves have different properties - Ali Baba's cave is made of rock while Aladdin's is shaped like a tiger and made of sand. The stories also feature thieves trying to steal the riches, with Ali Baba involving forty thieves and Aladdin featuring the villainous Jafar. While no one dies in Aladdin, Morgiana kills all forty thieves in Ali Baba. The author prefers Aladdin overall due to finding it a better story.