Kenpō

Kenpō was a Japanese word used to refer to Chinese martial arts forms.

In 2267, James T. Kirk mistakenly identified kenpō as one of the two major subdivisions of Judo. 

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James T. Kirk's error is completely understandable. After World War II, United States military training referred to all forms of unarmed, Eastern inspired combat as "Judo". In 1968 anyone who didn't know what they were talking (or writing) about could easily make this mistake.