bey vs seignior

bey

noun
  • in various other places, a prince or nobleman 

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

seignior

noun
  • A feudal lord; a nobleman who held his lands by feudal grant; any lord (holder) of a manor 

  • A title of respect, formerly corresponding (especially in France) approximately to Sir. 

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