expatriation vs transportation

expatriation

noun
  • forced expulsion of from one's native land to another 

  • voluntary migration from one's native land to another 

transportation

noun
  • Deportation to a penal colony. 

  • A ticket or fare. 

  • A means of conveyance. 

  • The act of transporting, or the state of being transported; conveyance, often of people, goods etc. 

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