inverity vs yanker

inverity

noun
  • Untruth, falsehood. 

yanker

noun
  • A brazen lie 

  • Someone who yanks, or gives a sudden hard pull 

  • Someone who pranks someone, who yanks chains, such as with crank calls. 

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