Jujitsu is an older martial art compared to Aikido. According to history, Jujitsu started in Japan in the 17th century. Although, there is no precise or accurate information about the real founder(s) of this martial art. There is a claim that the founder of Jujitsu was a doctor with the name Akiyama Shirobei. For some, they believe Jujitsu was created by three men, Isogai Jirozaemon, Miura Yojiemon, and Fukuno Hichiroemon. Aikido, being a newer martial art compared to Jujitsu, was created by Osensei in the 1920s. It is a little different in their training style. Jujitsu focuses more on the speed of the opponent with respect to the leverage, balance, and the force coming from the opponent.
In contrast, Aikido is based on the principle of endurance, controlled relaxation, and flexibility. Jujitsu trains people to focus more on different techniques that can affect the opponent's stability and force. Although the use of weapons is allowed in both, the common ones for Aikido are wooden swords, staff, and knives. For Jujitsu, the common ones are wooden chains, knives, and helmet smashers.