flay vs graffiti

flay

verb
  • To strip the skin off; to skin. 

  • To cause to fly; put to flight; drive off (by frightening). 

  • To frighten; scare; terrify. 

  • To be fear-stricken. 

  • To lash or whip. 

noun
  • A fright; a scare. 

  • Fear; a source of fear; a formidable matter; a fearsome or repellent-looking individual. 

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 flay and graffiti occurred in a corpus of books? (source: Google Ngram Viewer )