This provided to the readers diagram helps to understand the difference between spoilage and witchcraft, the evil eye and the curse.
Ingredients used in spoilage are not used in witchcraft, and the severity of the impact on a person depends on the family member ties: the closer the person who does an evil deed, the more it affects the poor fellow.
Strange as it sounds, with the curse, everything is much simpler. If the one who did the curse is still alive, and he does it a second time (even), then the curse will instantly disappear. In fact, the problem arises when the one who cursed is no longer alive.