There's a question regarding the usage of ninja ranking that I would like to inquire.
I actually first encountered these ranks while watching Naruto a few years ago. The Gennin, Chuunin and Jounin.
I came to understand that we are translating for the benefit of those who have no semblance of Japanese Culture, thus we are completely translating all translatable Japanese names. So here are some of the suggestions that I made:
Jounin - Ninja Master
Cuunin - Ninja Commander
Gennin - Low Rank Ninja
Feel free to edit, but I'm going use the English equivalent in the wiki.
Additional info, I'm currently working on the Space Ninja Jakanja section.