reffo vs émigré

reffo

noun
  • A refugee who has settled in Australia. 

émigré

noun
  • An emigrant, one who departs their native land to become an immigrant in another, especially a political exile. 

  • A French person who has departed their native land, especially a royalist who left during the French Revolution. 

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