aqueduct vs canal

aqueduct

noun
  • An artificial channel that is constructed to convey water from one location to another. 

  • A structure carrying water over a river or depression, especially in regards to ancient aqueducts. 

  • A structure conveying fluid, such as the cerebral aqueduct or vestibular aqueduct. 

canal

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

  • A tubular channel within the body. 

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

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

  • To travel along a canal by boat 

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