highway robbery vs steep

highway robbery

noun
  • The act of robbing a traveler on a public road. 

  • Said of excessive or exorbitant prices. 

steep

adj
  • expensive 

  • resulting in a mast or windshield angle that strongly diverges from the perpendicular 

  • Of a near-vertical gradient; of a slope, surface, curve, etc. that proceeds upward at an angle near vertical. 

verb
  • To imbue with something; to be deeply immersed in. 

  • To soak or wet thoroughly. 

noun
  • A rennet bag. 

  • The steep side of a mountain etc.; a slope or acclivity. 

  • A liquid used in a steeping process 

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