barn dance vs get one's groove on

barn dance

verb

  • To take part in barn dancing. 

noun

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

get one's groove on

verb

  • To dance. 

  • To have sex; to have sex with. 

How often have the words barn dance and get one's groove on occurred in a corpus of books? (source: Google Ngram Viewer )