migrant vs returnee

migrant

noun
  • Traveller or worker who moves from one region or country to another. 

  • A person who leaves one place in order to permanently settle in another. 

  • A migratory animal, in particular a migratory bird. 

  • Any of various pierid butterflies of the genus Catopsilia. Also called an emigrant. 

adj
  • Migratory. 

returnee

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

  • A person who sends something back. 

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