Whateverville vs backcountry

Whateverville

name
  • A substitute placename for an inhabited place, a city or town, with an unknown or unspecified name. 

backcountry

noun
  • A remote region; countryside that is relatively inaccessible; the boondocks. 

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