monogamous vs swinging

monogamous

adj
  • Monogamic; having a simple flower with united anthers. 

  • Being married to one person at a time. 

  • Having only one sexual partner at a time. 

swinging

noun
  • The act or motion of that which swings. 

  • An activity where couples engage in sexual activity with different partners. 

adj
  • Sexually promiscuous. 

  • Fine, good, successful. 

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