occupant vs proprietress

occupant

noun
  • The owner or tenant of a property. 

  • A person who occupies an office or a position. 

  • A person who occupies a place. 

  • A person sitting in a car or other vehicle. 

proprietress

noun
  • A female proprietor. 

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