chantage vs enforcement

chantage

noun
  • blackmail; the extortion of money by threats of scandalous revelations 

enforcement

noun
  • The act of enforcing; compulsion. 

  • A giving force to; a putting in execution. 

  • That which enforces, constraints, gives force, authority, or effect to; constraint; force applied. 

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