antediluvian vs castoff

antediluvian

adj
  • Ancient or antiquated. 

  • Extremely dated. 

  • Pertaining or belonging to the time period prior to a great or destructive flood or deluge. 

  • Pertaining or belonging to the time prior to Noah's Flood. 

noun
  • One who lived prior to Noah's Flood. 

castoff

adj
  • discarded, rejected. 

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

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