graffiti vs pock

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. 

pock

verb
  • To scar or mark with pits 

noun
  • Any pit, especially one formed as a scar 

  • A pus-filled swelling on the surface on the skin caused by an eruptive disease. 

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