douchebag vs shitface

douchebag

noun
  • A jerk or asshole; a mean or rude person; someone seen as being arrogant, snobby or obnoxious. 

  • A sterile container which holds the fluid used for giving a vaginal douche. 

  • Any social misfit; a doofus, dork, or nerd. 

shitface

noun
  • a contemptible person 

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