backdrop vs papering

backdrop

noun
  • An image that serves as a visual background. 

  • A decorated cloth hung at the back of a stage. 

  • The setting or background of an acted performance. 

  • Any background situation. 

verb
  • To serve as a backdrop for. 

papering

noun
  • Wallpaper. 

  • A technique of boycotting a judge by the Public Defender's Office by filing a request for a different judge in every case assigned to this judge. 

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