Black belt (martial arts) of ability when using these tactics and are sometimes referred to as McDojos or belt factories. In some Japanese schools, after obtaining a black belt the student also begins to instruct, and may be referred to as a senpai (senior student) or sensei (teacher). In others, a black belt student should not be called sensei until they are sandan (third degree black belt), or the titles kyosa or sabom in Korean martial arts as second degree or higher, as this denotes a greater degree of experience and a sensei must have this and grasp of what is involved in teaching
Japanese martial arts include marine skills such as swimming and river-fording ("suijutsu"), equestrianism ("bajutsu"), arson and demolition ("kajutsu"). , literally meaning "modern martial way", usually applies to arts founded after the beginning of the Meiji Restoration in 1868. Aikido and judo are examples of "gendai budō" that were founded in the modern era, while "iaidō" represents the modernization of a practice that has existed for centuries. The core difference is, as was explained under ""koryū"", above, that "koryū" arts are practiced as they were when their primary utility was for use in warfare, while the primary purpose of "gendai budō" is for self-improvement,