castoff vs disaffirmance

castoff

noun
  • Something that has been rejected or discarded; a reject. 

adj
  • discarded, rejected. 

disaffirmance

noun
  • The act of disaffirming; denial. 

  • Overthrow or annulment by the decision of a superior tribunal. 

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