expat vs nomad

expat

noun
  • An expatriate; a person who lives outside their own country. 

nomad

noun
  • A person who changes residence frequently. 

  • A player who changes teams frequently. 

  • A member of a society or class who herd animals from pasture to pasture with no fixed home. 

  • Synonym of wanderer: an itinerant person. 

adj
  • Synonym of nomadic. 

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