illegal alien vs nonlocal

illegal alien

noun
  • A person who is within the boundaries of a political state without the authorization of the government of that state; a national of another country who has entered or stayed without permission. 

nonlocal

noun
  • One who is not a local; a stranger or foreigner. 

  • An identifier that is not locally scoped. 

adj
  • Not local; not specific to a location 

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