How do you say king in Russian?
tsar or czar
Like "Kaiser" in German, the Russian "Tsar" or "Czar" is derived
from CAESAR, meaning Emperor. After Octavian Caesar became Caesar
Augustus, all the Roman Emperors were known as Caesar, and it
became synonymous with Emperor. This I found, as well as the
Russian word for King being "Korol' ", in a Wikipedia article about
the word Tsar. It's quite comprehensive.