Here are some witchy Halloween words for you:
Necromancy means the conjuration of the spirits of the dead to reveal the future or influence the course of events magically.
Goety is black magic or witchcraft in which the assistance of evil spirits is invoked.
Bruja is a witch or sorceress.
Diablerie black magic or sorcery.
Lamia is a female demon or vampire.
Gramarye necromancy, magic or enchantment.