foot passenger vs occupant

foot passenger

noun
  • A passenger on a ferry who does not have a car, or any other form of transport, with them. 

occupant

noun
  • A person sitting in a car or other vehicle. 

  • A person who occupies an office or a position. 

  • A person who occupies a place. 

  • The owner or tenant of a property. 

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