Magick is the art and science of causing change in accordance with the will by non-physical means.
Magick is associated with all kinds of paranormal and occult phenomena, including but not limited to: ESP, astral projection, psychic healing, the cabala, and chakras. Magick uses various symbols, such as the pentagram, as well as a variety of symbolic ritual behaviors aimed at achieving powers which allow one to contravene the laws of physics, chemistry, etc.
Magick should not be confused with magic, which is the art of conjuring and legerdemain, the alternate spelling was used to differentiate magick from other practices, such as stage magic commonly performed by magicians and of course is all smoke and mirrors and trickery.
Subject: magic or Magick???