khan vs pasha

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. 

pasha

noun
  • A high-ranking Turkish military officer, especially as a commander or regional governor; the highest honorary title during the Ottoman Empire. 

  • The Indian butterfly Herona marathus, family Nymphalidae. 

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