Magic

Magic is the manipulation of surroundings by supernatural means, however most reported cases of "magic" were actually scientific, and belief in magic is generally restricted mostly to primative races.

For example, the Sycorax believed that blood control was supernatural (even the Humans of Earth were fooled by the process, a member of UNIT stating that it looked like a spell was being cast) and they described the ability of a Time Lord in the first fifteen hours after their regenerative cycle to regrow body parts as "witchcraft". (DW: The Christmas Invasion)