barn vs floor-through

barn

noun
  • A warm and cozy place, especially a bedroom; a roost. 

  • An arena. 

  • A unit of surface area equal to 10⁻²⁸ square metres. 

  • A building, often found on a farm, used for storage or keeping animals such as cattle. 

  • A child. 

verb
  • To lay up in a barn. 

floor-through

noun
  • An apartment which covers the entire depth of a building. 

How often have the words barn and floor-through occurred in a corpus of books? (source: Google Ngram Viewer )