autography vs scribbling

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. 

scribbling

noun
  • That which has been scribbled, written in a scrawled or careless hand. 

  • The carding of wool or cotton. 

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