castoff vs disaffirmation

castoff

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

adj
  • discarded, rejected. 

disaffirmation

noun
  • The act of denial; a declaration that something is not true. 

  • Repudiation of self or other. 

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