intercourse vs live together

intercourse

verb
  • To have sexual intercourse. 

noun
  • Dealings with people, including commerce and trade. 

  • Sexual intercourse usually involving humans. 

  • Dealings between countries. 

  • Communication, conversation. 

live together

verb
  • To cohabit and have sexual relations while not being married. 

  • Used other than figuratively or idiomatically: see live, together. 

How often have the words intercourse and live together occurred in a corpus of books? (source: Google Ngram Viewer )