bey vs nobility

bey

noun
  • in various other places, a prince or nobleman 

  • A governor of a province or district in the Turkish dominions 

nobility

noun
  • The quality of being noble. 

  • A noble or privileged social class, historically accompanied by a hereditary title; aristocracy. 

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