I chose to refer to Witch as the spirit inside, because after Christianity came to power the only ones that held onto the old ways, the sciences that were condemned were the Pagans. I think it became like a quest for them. They knew the knowledge in the sciences and were willing to die to keep it alive. Unlike Wicca, or any other faith, anyone can practice. You don't have to be Wiccan, or any Pagan belief.
Christians practice witchcraft, agnostics and atheists as well.
A craft of the natural, the earth, the basic essence of the universe. Second, as I just stated, you don't have to ascribe to any deity or creator. The basic definition eliminates the possibility that witchcraft is a religion. I know that witchcraft has been recognized by the government as a religion, and I believe that is wrong. To recognize Wicca, is one thing.