look down on vs shun

look down on

verb
  • To regard or treat as inferior. 

  • To view [people or events on Earth] from the vantage point of the afterlife (originally, Heaven) 

shun

verb
  • To escape (a threatening evil, an unwelcome task etc). 

  • To screen, hide. 

  • To avoid, especially persistently; ostracize. 

  • To shove, push. 

How often have the words look down on and shun occurred in a corpus of books? (source: Google Ngram Viewer )