boycott vs shun

boycott

verb
  • To abstain, either as an individual or a group, from using, buying, or dealing with someone or some organization as an expression of protest. 

noun
  • The act of boycotting. 

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 boycott and shun occurred in a corpus of books? (source: Google Ngram Viewer )