[Bennett]

My brain is turning on that question. I would find it hard to classify witchcraft without some other form of spirituality. From what I know about it (admittedly probably very little) the person practicing witchcraft would drawn on some sort of outside spiritual power. It could be a certain deity or some aspect of nature, or even something satanic. These however, all fall into the categories that you didn't want me to include.

I wouldn't say that the witchcraft is a religion, but I would say that it doesn't really exist outside of something greater spiritually.