mutasarrif vs seneschal

mutasarrif

noun
  • The governor of a province in some Muslim contexts, particularly (historical) in the Ottoman Empire. 

seneschal

noun
  • An officer of the crown in late medieval and early modern France who served as a kind of governor and chief justice of the royal court in Normandy and Languedoc. 

  • A steward, particularly (historical) one in charge of a medieval nobleman's estate. 

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