emigrant vs pilgrim

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. 

pilgrim

noun
  • A newcomer. 

  • A silk screen formerly attached to the back of a woman's bonnet to protect the neck. 

  • One who travels, especially on a journey to visit sites of religious significance. 

verb
  • To journey; to wander; to ramble. 

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