Hitler vs caesar

Hitler

noun
  • A dictatorial person; someone who loves to exert their power and influence over others. (often used as a term of abuse) 

name
  • A surname of Austrian origin. 

caesar

noun
  • emperor, ruler, dictator 

  • Any agaric mushroom of the genus Amanita, section Amanita sect. Caesareae. 

How often have the words Hitler and caesar occurred in a corpus of books? (source: Google Ngram Viewer )