currency vs paperhanging

currency

noun
  • Paper money. 

  • Money or other items used to facilitate transactions. 

  • The state of being current; general acceptance or recognition. 

paperhanging

noun
  • The illegal activities of a paperhanger; counterfeiting fraud. 

  • Wallpaper. 

  • The trade of hanging wallpaper on walls. 

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