Originally, 'jujutsu' is used as the general term for the Japanese unarmed martial arts, but occasionally, 'jujutsu' includes not only its Japanese descendants (the modern judo and aikido) but also its descendants abroad (Brazilian Jiu-Jitsu developed in Brazil, JJIF Ju-jitsu and IJJF Jujitsu [the latter two were developed in Europe]).
本来、「柔術」は日本における徒手武術全般の総称であるが、その流れを汲む現代柔道、合気道、ブラジルで発展したブラジリアン柔術、ヨーロッパで発展したJJIF柔術・IJJF柔術等も「柔術」に含まれる場合がある。