exile vs expel

exile

verb
  • To send (someone or something) into exile. 

noun
  • The state of being banished from one's home or country. 

  • Someone who is banished from their home or country. 

expel

verb
  • To deport. 

  • To eject or erupt. 

  • To remove from membership. 

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