folly vs intelligibility

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. 

intelligibility

noun
  • The quality of recorded speech of every word being understandable. 

  • That which is intelligible; the degree to which something is intelligible. 

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