hinterland vs north forty

hinterland

noun
  • A remote or undeveloped area, a backwater. 

  • The land immediately next to, and inland from, a coast. 

  • Anything vague or ill-defined, especially something that is ill understood. 

  • The rural territory surrounding an urban area, especially a port. 

  • That which is unknown or unexplored about someone. 

north forty

noun
  • Any remote place. 

  • A 40-acre section of land, located in the northernmost part of a farm or ranch. 

  • Farms, ranches, or agricultural land collectively. 

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