palingenesis vs reduplication

palingenesis

noun
  • Rebirth; regeneration; (countable) an instance of this. 

  • Spiritual rebirth through the transmigration of the soul. 

  • The recurrence of historical events in the same order in an infinite series of cycles. 

  • The regeneration of magma by the melting of metamorphic rocks. 

reduplication

noun
  • The act of, or an instance of, reduplicating. 

  • The folding or doubling of a part or organ. 

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