enforcement vs vampirism

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. 

vampirism

noun
  • extortion 

  • practices associated with vampires, in particular blood-drinking and the draining of a victim's life-force. 

  • Systemic lupus erythematosus (autoimmune disease) 

  • the state of being a vampire 

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