illegible handwriting vs scribble

illegible handwriting

scribble

verb
  • To write badly; to work as an inferior author or journalist. 

  • To doodle. 

  • To write or draw carelessly and in a hurry. 

noun
  • Careless, hasty writing, doodle or drawing 

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