castoff vs disputation

castoff

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

adj
  • discarded, rejected. 

disputation

noun
  • The act of disputing; a dispute or argument. 

  • A rhetorical exercise in which parties reason in opposition to each other on some question proposed. 

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