disfiguration vs graffiti

disfiguration

noun
  • The act of disfiguring, spoiling the appearance of something or someone; the state of being disfigured. 

graffiti

verb
  • To mark a surface with such images. 

noun
  • Drawings or words drawn on a surface in a public place, usually made without authorization. 

  • Informal inscriptions, figure drawings, etc., as opposed to official inscriptions. 

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