Thread:HowlingSister/@comment-996391-20170307105137/@comment-996391-20170327122039

All ghosts are undead, but not all undead are ghosts. The term undead refers to all sorts of creatures from ancient myths and horror literature. That includes ghosts, vampires, zombies, etc. Barbossa was undead, but he wasn't a ghost. "We are not among the living, and so we cannot die. But neither are we dead."