madness vs silliness

madness

noun
  • rash folly 

  • The state of being mad; insanity; mental disease. 

  • The state of being angry. 

silliness

noun
  • An act that is silly; a result of being silly. 

  • That which is perceived as silly or frivolous. 

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