emigrant vs emigre

emigrant

noun
  • Someone who leaves a country to settle in a new country. 

  • Any of various pierid butterflies of the genus Catopsilia. Also called a migrant. 

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. 

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