back of beyond vs north forty

back of beyond

noun
  • A very remote place. 

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 back of beyond and north forty occurred in a corpus of books? (source: Google Ngram Viewer )