sugarcoat vs window-dress

sugarcoat

verb
  • To make superficially more attractive; to give a falsely pleasant appearance to. 

  • To coat with sugar. 

window-dress

verb
  • To give something superficial attractiveness 

  • To decorate the window of a shop 

How often have the words sugarcoat and window-dress occurred in a corpus of books? (source: Google Ngram Viewer )