emigrant vs pavee

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. 

pavee

noun
  • A traveller, a member of Ireland's nomadic ethnic minority. 

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