annulment vs reversal

annulment

noun
  • The state of having been annulled. 

  • A legal (notably judicial) declaration that a marriage is invalid; the procedure leading to it. 

  • An act or instance of annulling. 

  • An invalidation of something, especially a legal contract. 

reversal

noun
  • The state of being reversed. 

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

  • An instance of reversing. 

adj
  • Intended to reverse; implying reversal. 

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