shah vs theocrat

shah

noun
  • A king of Persia or Iran. 

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

  • A Ukrainian monetary unit. 

theocrat

noun
  • The ruler of a theocracy, a priest-king. 

  • A proponent of theocracy. 

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