monogamous vs restrained

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. 

restrained

adj
  • Held back, limited, kept in check or under control. 

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