Using spells, believing in evil spirits, and other examples of witchcraft are all part of sorcery. Sorcery is popular with wizards and witches and anyone else with a bubbling caldron.
The Latin sors for "fate" shows up in the word sorcery, which is a way to try to affect fate through unnatural, evil ways. If you've checked out any fantasy books or movies, you've probably seen sorcery in action, which is practiced by witches, warlocks, and members of the occult. Turning an annoying neighbor into a ferret would be an example of sorcery.