do the nasty vs get one's freak on

do the nasty

verb

  • To engage in sexual intercourse. 

get one's freak on

verb

  • To have sex. 

  • To go crazy; to freak out. 

  • To dance. 

  • To party. 

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