defacement vs scribbling

defacement

noun
  • An act of defacing; an instance of visibly marring or disfiguring something. 

  • An act of voiding or devaluing; nullification of the face value. 

  • A symbol added to a flag or coat of arms to change it or make it different from another. 

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