as the Republic had not seen war in over a thousand years, and the title of Knight was simply a rank once again.
Jedi Master: A Jedi Knight may become a Jedi Master after successfully training a Padawan learner to Knight status. Though this is the most common manner, there are other ways of attaining the rank.
Jedi Grand Master: Grand Master is usually the oldest, most experienced and best trained of all Jedi. A Grand Master is chosen by the Jedi Council to lead it and the Jedi Order. In Star Wars, Yoda is considered to be the Grand Master, although the rank is never mentioned in any of the six films of the saga.