desktop vs wallcovering

desktop

noun
  • The wallpaper of this interface. 

  • A personal computer, as opposed to computers for business or server purposes. 

  • The main graphical user interface of an operating system, usually displaying icons, windows and background wallpaper. 

  • The top surface of a desk. 

  • A desktop computer. 

adj
  • Of an application or website, designed to be run or viewed on a personal computer. 

  • Designed for use on a desk or similar piece of furniture. 

wallcovering

noun
  • A covering for a wall, such as wallpaper 

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