agitate vs barn dance

agitate

verb
  • To cause to move with a violent, irregular action; to shake. 

  • To disturb or excite; to perturb or stir up (a person). 

barn dance

verb
  • To take part in barn dancing. 

noun
  • A type of set step routine dancing, such as square dance. 

How often have the words agitate and barn dance occurred in a corpus of books? (source: Google Ngram Viewer )