Caesar vs Kaiser
I just noticed that the latin word Caesar and German word Kaiser are pronounced the same (Latin c is always hard) which makes me wonder if the german word for "leader" or "King" was derived from the great roman emperor julius caesar
You are right. Kaiser in German is from Latin Caesar. One of the derived terms in modern languages best known to English speakers is Russian Царь (Czar or Tsar), which, as well as related words in other Slavic languages, also comes from the name Caesar, first used by the Bulgarians around 1000 A.D.
“Kaiser” is German for “Emperor”. The German word for “king” is “König”, which like its English equivalent comes from the proto-Germanic “kuningaz”, which apparently originally meant “Kin, or someone of the family”.
Also, Julius Caesar was never emperor. He made himself “Dictator for Life”, and then the senators murdered him because they thought he was going to revive the ancient, much reviled monarchy. Once the ensuing civil war eventually settled down, Julius’ great-nephew Augustus was on top and made himself Imperator (Emperor). This was a title that originally just meant “commander”, but it basically allowed him to be a king by another name. Because of Augustus, Caesar also transformed from a family name to a royal title.