antediluvian vs prediluvian

antediluvian

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

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. 

prediluvian

noun
  • One who lived before the Flood; an antediluvian. 

adj
  • Before the Flood; antediluvian. 

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