reinforce vs shun

reinforce

verb
  • To encourage (a behavior or idea) through repeated stimulus. 

  • To strengthen, especially by addition or augmentation. 

  • To emphasize or review. 

shun

verb
  • To avoid, especially persistently; ostracize. 

  • To screen, hide. 

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

  • To shove, push. 

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