burlesque vs laugh at

burlesque

verb
  • To ridicule, or to make ludicrous by grotesque representation in action or in language. 

  • To make a burlesque parody of. 

noun
  • A ludicrous imitation; a caricature; a travesty; a gross perversion. 

  • A derisive art form that mocks by imitation; a parody. 

  • A variety adult entertainment show, usually including titillation such as striptease, most common from the 1880s to the 1930s. 

laugh at

verb
  • To scorn or tease; to evince contempt or pity for someone, usually contrasted with laugh with. 

  • Used other than figuratively or idiomatically: see laugh, at. 

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