antediluvial vs obsolete

antediluvial

adj
  • Antiquated. 

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

obsolete

adj
  • No longer in use; gone into disuse; disused or neglected (often in favour of something newer). 

  • Imperfectly developed; not very distinct. 

verb
  • To cause to become obsolete. 

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