boycott vs sleep-in

boycott

noun
  • The act of boycotting. 

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. 

sleep-in

noun
  • An instance of sleeping in, sleeping late, sleeping until one feels fully refreshed rather than rising at a prespecified time. 

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