jigsaw vs unintelligibility

jigsaw

noun
  • Something that can be compared to a jigsaw puzzle. 

  • A power saw with fine teeth and a narrow blade which can cut curves in wood or metal. 

  • A jigsaw puzzle. 

verb
  • To cut something using a jigsaw. 

unintelligibility

noun
  • Something that is unintelligible. 

  • The quality or condition of being unintelligible. 

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