agriculturist vs migrant worker

agriculturist

noun
  • One who practices agriculture, a farmer, a gardener. 

  • An expert in agriculture who advises farmers. 

adj
  • Of or pertaining to agriculture or agriculturists. 

migrant worker

noun
  • An agricultural labourer who travels from place to place harvesting seasonal crops. 

  • A person with temporary permission to work in another country; a guest worker. 

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