fourgon vs foursquare

fourgon

noun
  • A polygon with four sides; a quadrilateral. 

  • A French baggage wagon. 

  • An ammunition wagon. 

foursquare

noun
  • A four-square cipher. 

  • A boxy style of domestic architecture with four rooms to a floor, one of which is usually a stair hall. 

adj
  • Solid, robust. 

  • Pertaining to the International Church of the Foursquare Gospel. 

  • Having four equal sides; square. 

  • Pertaining to a four-square cipher. 

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