autography vs chirography

autography

noun
  • Writing in one's own handwriting. 

  • A process in lithography by which a writing or drawing is transferred from paper to stone. 

  • An autobiography. 

chirography

noun
  • Synonym of handwriting or penmanship, one's personal skill at writing. 

  • Synonym of calligraphy, the art of beautiful writing. 

  • Synonym of palmistry, fortune-telling based on one's hand. 

  • Synonym of autograph, writing in one's own hand. 

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