revisal vs undoing

revisal

noun
  • The act of revising; a revision. 

undoing

noun
  • Annulment; reversal 

  • Ruin; defeat, (also) that which causes defeat or ruin. 

  • The act of loosening or unfastening 

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