flophouse vs guesthouse

flophouse

noun
  • A cheap hotel or boarding house where many people sleep in large rooms. 

verb
  • To stay in a flophouse. 

guesthouse

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

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

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