add bells and whistles vs gild

add bells and whistles

gild

verb
  • To cover with a thin layer of gold; to cover with gold leaf. 

  • To adorn. 

  • To decorate with a golden surface appearance. 

  • To give a bright or pleasing aspect to. 

  • To make appear drunk. 

How often have the words add bells and whistles and gild occurred in a corpus of books? (source: Google Ngram Viewer )