back-alley vs fishy

back-alley

adj
  • Occurring away from publicity, or in mean surroundings; backstreet. 

fishy

adj
  • Suspicious; inspiring doubt. 

  • Of, from, or similar to fish. 

  • Of drag queens: appearing feminine. 

How often have the words back-alley and fishy occurred in a corpus of books? (source: Google Ngram Viewer )