Ghost

Ghost is the title of:


 * Ghost (film), the movie starring Patrick Swayze, Demi Moore, and Whoopi Goldberg
 * Paladin of Shadows, the first novel of John Ringo's Paladin of Shadows series

You may also have been looking for:
 * The Ghost, a character who never appears on-screen
 * One of the tropes in the Haunted Index