pharaoh vs shah

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. 

shah

noun
  • A king of Persia or Iran. 

  • A supreme ruler in some Middle Eastern or South Asian nations. 

  • A Ukrainian monetary unit. 

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