caesar vs pharaoh

caesar

noun
  • emperor, ruler, dictator 

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

pharaoh

noun
  • The supreme ruler of Ancient Egypt; a formal address for the sovereign seat of power as personified by the "king" in an institutional role of Horus son of Osiris; often used by metonymy for Ancient Egyptian sovereignty 

  • The card game faro. 

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