incomprehensibility vs jigsaw

incomprehensibility

noun
  • Something that cannot be understood. 

  • The condition of being incomprehensible. 

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. 

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