alien vs refugee

alien

noun
  • One excluded from certain privileges; one alienated or estranged. 

  • Any life form of extraterrestrial or extradimensional origin. 

  • A foreigner residing in a country. 

  • A person, animal, plant, or other thing which is from outside the family, group, organization, or territory under consideration. 

adj
  • Not belonging to the same country, land, or government, or to the citizens or subjects thereof; foreign. 

  • Very unfamiliar, strange, or removed. 

  • Pertaining to extraterrestrial life; typical of an extraterrestrial creature. 

verb
  • To estrange; to alienate. 

  • To transfer the ownership of something. 

refugee

noun
  • A person who flees one place or institution for another. 

  • A person seeking refuge due to a natural disaster, war, etc. 

  • A person seeking refuge in a foreign country out of fear of political persecution or the prospect of such persecution in their home country, i.e., a person seeking political asylum. 

  • A person formally granted political or economic asylum by a country other than their home country. 

verb
  • To convey (slaves) away from the advance of the federal forces. 

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