immigrant vs pilgrim

immigrant

noun
  • A non-native person who comes to a country from another country to permanently settle there. 

  • A plant or animal that establishes itself in an area where it previously did not exist. 

adj
  • Of or relating to immigrants or the act of immigrating. 

pilgrim

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

  • A newcomer. 

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

verb
  • To journey; to wander; to ramble. 

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