farmhouse vs rooming house

farmhouse

noun
  • A house that was once a farmer's residence albeit today lived in by residents whose occupation is not farming. 

  • A farmer's residence. 

rooming house

noun
  • A house which lets out furnished apartments. 

  • A building with small, basic, inexpensive apartments for rent, often without en-suite bathrooms. 

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