prevarication vs testilying

prevarication

noun
  • The collusion of an informer with the defendant, for the purpose of making a sham prosecution. 

  • Evasion of the truth. 

  • A secret abuse in the exercise of a public office. 

  • A false or deceitful seeming to undertake a thing for the purpose of defeating or destroying it. 

testilying

noun
  • The act of a police officer giving false testimony (perjury). 

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