Ninjutsu
Ninjutsu sometimes used interchangeably with the term ninpō is the martial art, strategy, and tactics of unconventional warfare and guerrilla warfare as well as the art of espionage purportedly practiced by the shinobi (commonly known outside of Japan as ninja)
Ninjutsu was developed as a collection of fundamental survivalist techniques in the warring state of feudal Japan. The ninja used their art to ensure their survival in a time of violent political turmoil. Ninjutsu included methods of gathering information, and techniques of non-detection, avoidance, and misdirection. Ninjutsu can also involve training in disguise, escape, concealment, archery, medicine, explosives, and poisons.
Skills relating to espionage and assassination were highly useful to warring factions in feudal Japan. Because these activities were seen as dishonorable, Japanese warriors hired people who existed below Japan's social classes to perform these tasks. These persons were literally called "non-humans",. At some point the skills of espionage became known collectively as ninjutsu, and the people who specialized in these tasks were called shinobi no mono.
Kunoichi is the term for a female ninja.
The following tools are commonly associated with the practice of Ninjutsu.
Kaginawa, or Grappling hook (facilitates stealth entry and Hojojutsu)
Hanbo (small staff)
Kama (weaponised farming blade)
Kunai (multi-purpose tool)
Kusarigama and Kyoketsu shoge (composite blade weapons)
Manriki, Manriki-gusari and Kusarifundo (chain weapons)
Ninjato (disguised short sword)
Shuriken ("throwing stars" or darts)
Tekagi-shuko and Neko-te ("claw" weapons)
The 18 disciplines are: 1,Seishinteki kyōyō (spiritual refinement) 2, Taijutsu (unarmed combat) 3, Kenjutsu (sword techniques) 4, Bōjutsu (stick and staff techniques) 5, Sōjutsu (spear techniques) 6, Naginatajutsu (naginata techniques) 7, Kusarigamajutsu (kusarigama techniques) 8, Shurikenjutsu (throwing weapons techniques) 9, Kayakujutsu (pyrotechnics and explosives) 10, Hensōjutsu (disguise and impersonation) 11, Shinobi-iri (stealth and entering methods) 12,Bajutsu (horsemanship) 13, Sui-ren (water training) 14, Bōryaku (tactics) 15, Chōhō (espionage) 16, Intonjutsu (escaping and concealment) 17, Tenmon (meteorology) 18, Chi-mon (geography)