big house vs country house

big house

noun
  • Used other than figuratively or idiomatically: see big, house. 

  • A religious building of the Delaware Indians, representing the cosmos. 

  • Prison, jail. 

country house

noun
  • A second home. 

  • A weekend and holiday residence, located outside of urban areas, used as a retreat from city life. 

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