foyer vs jet bridge

foyer

noun
  • A lobby, corridor, or waiting room, used in a hotel, theater, etc. 

  • A hostel offering accommodation and work opportunities to homeless young people. 

  • The crucible or basin in a furnace which receives the molten metal. 

jet bridge

noun
  • An elevated corridor connecting an airport to a plane, usually enclosed and used for disembarking and embarking passengers and crew. 

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