khan vs rani

khan

noun
  • An Ottoman sultan. 

  • A noble or man of rank in various Muslim countries of Central Asia, including Afghanistan. 

  • A ruler over various Turkish, Tatar and Mongol peoples in the Middle Ages. 

  • A caravanserai; a resting-place for a travelling caravan. 

rani

noun
  • The wife of a rajah. 

  • A Hindu princess or female ruler in India. 

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