britannica

 Martial arts can be divided into the armed and unarmed arts. The former include archery, spearmanship, and swordsmanship; the latter, which originated in China, emphasize striking with the feet and hands or grappling. In Japan, traditionally a warrior’s training emphasized archery, swordsmanship, unarmed combat, and swimming in armour. Members of other classes interested in combat concentrated on arts using the staff, everyday work implements (such as thrashing flails, sickles, and knives), and unarmed combat. Perhaps the most versatile practice was ninjutsu, which was developed for military spies in feudal Japan and also included training in disguise, escape, concealment, geography, meteorology, medicine, and explosives. In modern times, derivatives of some of the armed martial arts, such as kendō (fencing) and kyūdō (archery), are practiced as sports. Derivatives of the unarmed forms of combat, such as judo, sumo, karate, and tae kwon do, are practiced, as are self-defense form...