boycott vs shut out

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. 

shut out

verb
  • To refuse to be open and vulnerable toward. 

  • To prevent from scoring; to perform a shutout. 

  • To hide from sight. 

  • To prevent from entering; to block or exclude. 

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