That was a little political joke, sorry
I'm not the historian, so, using google, I've found this article: http://samlib.ru/z/z..._n/titles.shtml
. I don't know how much truthful is it, but i think it's quite good.
The translation of the table in the end:
1. Veliki Knyaz (Grand Knyaz, Prince, Grand Duke) - the highest title, smth like western King or Kohung.
2. Udelny Knyaz (Udel = Fief or Feud) - next title, smth like western Duke. They have to submit Veliki Knyaz in theory, but in period of "Rus Fragmentation" they usually were independent in their Principalities indeed.
3. Namestnik - (literally translates like Viceroy) boyar, who was assigned to manage some region.
4. Posadnik - (literally translates like Mayor) boyar, who was assigned to manage the part of some region.
5. Volostelin - (Also used SOTNIK: Volost means smth like township, sometimes called "Sotnya". Sotnya translates "One hundred", so Sotnik means also smth like Centurion in Roman army) boyar, who was assigned to manage Volost/Sotnya.
6. Boyarin - Boyar, high rank hereditary noble.
7. Deti Boyarskie (literally translates like "Boyars Children or Sons") - Lower rank noblemen, all ranks and titles martial people, free servants, etc.
Probably, Great Novgorod had some differences in titles because of its republican system.
Sorry for my ill English