guesthouse vs homestay

guesthouse

noun
  • A small house near a main house, for lodging visitors. 

  • A private house offering accommodation to paying guests; a boarding house; a bed and breakfast. 

homestay

noun
  • A house used primarily as the residence of the owner but with the business of accommodating paying guests. 

  • A system whereby students, visiting a foreign country to study, board with a local family at an affordable price. 

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