Any of these weapons can be studied following one of two disciplines. The study of Korean sword as a weapons system is commonly called Geom Beop ("sword methods") while the use of sword study as a form of personal development or sport is commonly called Geom Do (검도, 劍道) "Way of the Sword"). In either case, additional equipment and practices have been added to further the study and safety of the subject. These include but are not limited to body armor ("Ho-gu," Japanese": Bōgu)" bamboo swords ("Juk-To," Japanese": Shinai") and wooden swords ("Mok-Geom," Japanese": bokken") and a range of materials for piercing or cutting.