Death

Death is a word that refers to the opposite of life. When life is gone from someone, they are dead, and this state is referred to as the state of "death." Zombies and other like-creatures are referred to as Undead, as they are dead, but they have the appearance of being alive, except for the fact that they walk around in a mindless state. Ghosts are also by definition dead, at least their corporeal bodies are, as their spirit is still alive and active.

In the comics
In DC Comics, death is seen far more than it is in the SFU. For the most part death is censored in Super Friends and other Saturday morning cartoons, but this isn't the case in the comics, and in many ways death (and resurrection) in comics has became a gimmick to sell comic books. The most famous death was Superman's death, in Superman Vol. 2 # 75 (January 1993). This death however, only proved to be quite temporary, as he was later brought back to life in a later issue. Flash was also killed during the Crisis on Infinite Earths, only to be brought back in Flash: Rebirth. Supergirl was also killed during the Crisis but because of the fact that she was the Earth-One Supergirl, her death had no affect on the New Earth Supergirl, which was introduced in Superman/Batman #8 (May 2004). Hal Jordan also had died, and he became the new Spectre.