At first glance, the Lord of the Rings series and Pirates of the Caribbean series appear to be very different. Pirates is set in the real world, while Lord of the Rings is set in a complete fantasy world. Magic and the supernatural are common and accepted in the Lord of the Rings, while at the beginning of the Pirates series, most of the characters did not even know magic existed. Overall, it seemed like Lord of the Rings is completely immersed in fantasy, while Pirates is mostly based on real life with bits of fantasy sprinkled in.
There is, however, one area where the two films are almost alike: the presence of an object of great importance that brings the holder power over others. In Lord of the Rings, that object is the One Ring. Made by Sauron, it controls all of the other rings of power. Throughout the course of the film, most people who come into contact with it desire it immensely, with the notable exception of Frodo. In the Pirates series (especially Dead Man’s Chest) the object is the heart of Davy Jones. Since Davy Jones rules the seas, whoever controls his heart controls the seas. Throughout the movies Jack Sparrow, Will Turner and others battle for control over it.
There are still some differences between how the two objects are treated. The One Ring is treated as if it were an object of divine power that no man can control, but every man desires. Meanwhile, Davy Jones’s heart is treated as an object that can be used to accomplish a specific goal or objective. For example, Will wants it so he can get his father back, Norrington wants it to get his honor back, Jack needs it to settle his debt with Davy Jones, and Cutler Beckett uses it to try to rid the world of pirates.
Although the two series are different in many ways, one of their most important ideas is an important object that gives the holder great power and control over others, a plot point that makes them unique when compared to other films.
– Kashyap Saxena