doodle vs scribbling

doodle

noun
  • A small mindless sketch, etc. 

  • Penis. 

  • Any crossbreed of a poodle with a different breed of dog. 

verb
  • To draw or scribble aimlessly. 

  • To drone like a bagpipe. 

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 doodle and scribbling occurred in a corpus of books? (source: Google Ngram Viewer )