jerk-water vs jerkwater town

jerk-water

noun
  • A branch line train, using light equipment 

adj
  • Railroads with low traffic. 

  • Of an inhabited place, small, isolated, backward. 

jerkwater town

noun
  • A small town with minimal facilities and conveniences. 

How often have the words jerk-water and jerkwater town occurred in a corpus of books? (source: Google Ngram Viewer )