backyard vs estate

backyard

noun
  • A yard to the rear of a house or similar residence. 

  • An area nearby to a country or other jurisdiction's legal boundaries, particularly an area in which the country feels it has an interest. 

  • A person's neighborhood, or an area nearby to a person's usual residence or place of work and where the person is likely to go. 

estate

noun
  • A housing estate. 

  • An organization's collective information technology resources. 

  • A station wagon; a car with a tailgate (or liftgate) and storage space to the rear of the seating which is coterminous with the passenger compartment (and often extensible into that compartment via folding or removable seating). 

  • An (especially extensive) area of land, under a single ownership. 

  • The collective property and liabilities of someone, especially a deceased person. 

  • The nature and extent of a person's interest in, or ownership of, land. 

  • The landed property owned or controlled by a government or a department of government. 

  • A major social class or order of persons regarded collectively as part of the body politic of the country and formerly possessing distinct political rights (Estates of the realm). 

adj
  • Previously owned; secondhand. 

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