The term Reiki was in use prior to Dr. Usui using it and therefore is not exclusive to the healing system he rediscovered. There are many kinds of Reiki including Seichem Reiki and Tibetan Reiki. Usui Reiki is just one form of Reiki. The reason I chose to use the term Reiki for Karuna Reiki® is that Karuna healing energy is a Reiki like energy in that it is life force energy that is guided by the higher power. The word Karuna means "compassionate action" which is a feeling people often get who experience the energy of this system.