drainpipe vs waste pipe

drainpipe

noun
  • A pipe that is part of a device or appliance for carrying away waste fluid. 

  • A pipe that carries wastewater from a bathtub, shower, sink, etc. 

  • The type of pipe that is used to construct a drainpipe. 

  • A type of form-fitting trousers with highly tapered legs. 

  • A verticle pipe carrying water from the roof gutter down the side of a building; downspout. 

  • A conduit for carrying rainwater or flood water. 

waste pipe

noun
  • a pipe that carries off liquid waste; a drain or drainpipe 

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