exhaust pipe vs nozzle

exhaust pipe

noun
  • On a steam locomotive, a pipe which takes away steam exhausted from a cylinder. 

  • For internal combustion engines, the pipe that vents waste gases from the engine. 

nozzle

noun
  • A short outlet or inlet pipe projecting from the end or side of a hollow vessel, as a steam-engine cylinder or a steam boiler. 

  • The nose of an animal; muzzle. 

  • The part of an earbud that accommodates eartips. 

  • A short tube, usually tapering, forming the vent of a hose or pipe. 

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