bey vs nabob

bey

noun
  • in various other places, a prince or nobleman 

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

nabob

noun
  • Someone of great wealth or importance. 

  • A person with a grandiose style or manner. 

  • An Indian ruler within the Mogul empire. 

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