castoff vs ossified

castoff

adj
  • discarded, rejected. 

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

ossified

adj
  • Inflexible, old-fashioned. 

  • Having undergone the process of ossification (transformation into bone). 

  • Drunk. 

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