What does a reanimated corpse mean?

In voodoo activities, dead bodies are supposedly brought back to life (reanimated) as slaves (Zombies). In fact, it is unlikely that anyone actually dies, but rather is drugged and comatose.

In popular Horror, these zombies become cannibalistic killers, generating more zombies, but also many permanently dead victims.

The classic story of reanimation is Frankenstein by Mary Shelley, wherein a scientist creates a body from parts of corpses and restores life (of a sort) to the creature.