laugh out of court vs look down on

laugh out of court

verb
  • To dismiss as silly something presented with genuine conviction or treated seriously. 

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) 

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