>>39583
>Tsar, Czar, Ceasar,

Well, first you need to get the order of things right beforehand, methinks.

https://www.behindthename.com/name/caesar

https://en.wikipedia.org/wiki/Gaius_Julius_Caesar_(name)

>From a Roman cognomen that possibly meant "hairy", from Latin caesaries "hair". Julius Caesar and his adopted son Julius Caesar Octavianus (commonly known as Augustus) were both rulers of the Roman Empire in the 1st century BC. Caesar was used as a title by the emperors that came after them.

Caesar was a balding man, so the name was given to him as a tongue in cheek nickname. Same as Emperor Caligula who's name just translates to "Tiny boot". His Father's soldiers gave it to him as a term of endearment.

Since Julius Caesar was so charismatic and brilliant militarily, not perfect or pure though, just saiyan practically everyone wanted to be JUST LIKE HIM leader wise, minus the balding part. So that's where the name Czar/Tsar and Kaiser originates from. But, they don't have any relation with the other words

Which brings me to the second point regarding the last 2 German and Russian name