boycott vs rock the boat

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. 

rock the boat

verb
  • To disturb the status quo or go against rules or conventions, as in an effort to get attention. 

  • I'd just jump in and fix it, but that's not my job, and I don't want to rock the boat. 

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