The term "undead" refers to beings that are neither fully alive nor completely dead. This concept often appears in folklore, horror fiction, and popular culture, where these entities may exhibit characteristics of both life and death. Common examples of the undead include zombies, vampires, and ghosts, each with unique traits and behaviors. In many stories, the undead are portrayed as having a desire for human flesh, blood, or energy, often leading to conflict with the living. They can symbolize various themes, such as the fear of death or the consequences of immortality. The undead have become iconic figures in movies, books, and video games, captivating audiences worldwide.