exaction vs reversal

exaction

noun
  • The act of demanding with authority, and compelling to pay or yield; compulsion to give or furnish; a levying by force 

  • extortion. 

  • That which is exacted; a severe tribute; a fee, reward, or contribution, demanded or levied with severity or injustice. 

reversal

noun
  • A change in fortune; a change from being successful to having problems. 

  • An instance of reversing. 

  • The state of being reversed. 

adj
  • Intended to reverse; implying reversal. 

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