sentry-box vs terrace

sentry-box

noun
  • A booth erected to provide rudimentary shelter to a sentry on his post. 

terrace

noun
  • A platform that extends outwards from a building. 

  • A step-like landform; (sometimes) remnants of floodplains. 

  • A single house in such a group. 

  • The roof of a building, especially if accessible to the residents. Often used for drying laundry, sun-drying foodstuffs, exercise, or sleeping outdoors in hot weather. 

  • A raised, flat-topped bank of earth with sloping sides, especially one of a series for farming or leisure; a similar natural area of ground, often next to a river. 

  • The standing area of a sports stadium. 

  • A flat open area on the topmost floor of a building or apartment 

  • A row of residential houses with no gaps between them; a group of row houses. 

verb
  • To provide something with a terrace. 

  • To form something into a terrace. 

How often have the words sentry-box and terrace occurred in a corpus of books? (source: Google Ngram Viewer )