Wicca and the Christian Heritage

What is Wicca? Is it witchcraft, Paganism, occultism, esotericism, magic, spirituality, mysticism, nature religion, secrecy, gnosis, the exotic or 'other'? Wicca has been defined by and explored within all these contexts over the past thirty years by anthropologists, sociologists and historians, but there has been a tendency to sublimate and negate the role of Christianity in Wicca's historical and contemporary contexts.