mikado vs rani

mikado

noun
  • Any emperor of Japan. 

  • A former title of the emperors of Japan during a certain period. 

  • A game of skill, in which identically shaped (but differently colored and valued) wooden sticks must be removed from a pile without disturbing the remaining stack. 

  • A fabric having a stiff twill weave. 

rani

noun
  • A Hindu princess or female ruler in India. 

  • The wife of a rajah. 

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