returnee vs unperson

returnee

noun
  • Someone who comes back or returns, especially to their own country or region. 

  • A person who sends something back. 

unperson

noun
  • A human who has been stripped of rights, identity or humanity. 

verb
  • To strip (a human being) of rights, identity or humanity. 

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