canal vs pipeline

canal

verb
  • To dig an artificial waterway in or to (a place), especially for drainage 

  • To travel along a canal by boat 

noun
  • A tubular channel within the body. 

  • An artificial waterway or artificially improved river used for travel, shipping, or irrigation. 

  • One of the faint, hazy markings resembling straight lines on early telescopic images of the surface of Mars. 

pipeline

verb
  • To lay a system of pipes through something 

  • To design (a microchip etc.) so that processing takes place in efficient stages, the output of each stage being fed as input to the next. 

  • To connect a tube from ones mouth to ones anus (or the anus of another), in order to force someone to eat feces. 

  • To convey something by a system of pipes 

noun
  • A channel (either physical or logical) by which information is transmitted sequentially (that is, the first information in is the first information out). 

  • A conduit made of pipes used to convey water, gas or petroleum etc. 

  • A system or process through which something is conducted. 

  • The inside of a wave that a surfer is riding, when the wave has started closing over it. 

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