castaway vs expatriate

castaway

noun
  • A discarded person or thing. 

  • An outcast; someone cast out of a group or society. 

  • A shipwrecked sailor. 

adj
  • Cast adrift or ashore; marooned. 

  • Shipwrecked. 

  • Cast out; rejected or excluded from a group. 

expatriate

noun
  • One who has been banished from one's own country. 

  • One who lives outside one's own country. 

adj
  • Living outside of one's own country. 

verb
  • To withdraw from one’s native country. 

  • To banish; to drive or force (a person) from his own country; to make an exile of. 

  • To renounce the rights and liabilities of citizenship where one is born and become a citizen of another country. 

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