big house vs penal colony

big house

noun
  • Prison, jail. 

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

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

penal colony

noun
  • A colonial territory used (mainly) for the detention and forced labor of deportees, typically where free labor is desperately scarce. 

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