emigre vs wanderer

emigre

noun
  • One who has departed their native land, often as a refugee. 

  • An emigrant, one who departs their native land to become an immigrant in another. 

wanderer

noun
  • One who wanders, who travels aimlessly. 

  • Any of various far-migrating nymphalid butterflies of the genus Danaus. 

  • The wandering albatross, Diomedea exulans. 

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