handwriting vs sig

handwriting

noun
  • The characteristic writing of a particular person. 

  • The act or process of writing done with the hand, rather than typed or word-processed. 

  • Text that was written by hand. 

  • A characteristic trait or hallmark by which somebody may be recognised. 

sig

noun
  • A signature, especially on emails or newsgroup postings. 

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