castoff vs slighting

castoff

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

adj
  • discarded, rejected. 

slighting

noun
  • The action of rejecting someone or something; rejection. 

  • The act of giving a slight or snub. 

  • The full or partial demolition of a fortification. 

  • An act of ignoring or neglecting someone or something; more broadly neglect. 

adj
  • In the manner of a slight; belittling, deprecative 

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