antediluvial vs superannuated

antediluvial

adj
  • Antiquated. 

  • Of or pertaining to a time before Noah's flood. 

superannuated

adj
  • Obsolete, antiquated. 

  • Retired or discarded due to age. 

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