advisability vs folly

advisability

noun
  • The quality of being advisable or prudent. 

  • An instance of advisability; a consideration in determining overall advisability. 

folly

noun
  • Foolishness that results from a lack of foresight or lack of practicality. 

  • a pinkish-red color 

  • A fanciful building built for purely ornamental reasons. 

  • Thoughtless action resulting in tragic consequence. 

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