canal vs gully

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. 

gully

verb
  • To wear away into a gully or gullies. 

noun
  • A road drain. 

  • A small valley. 

  • A fielding position on the off side about 30 degrees behind square, between the slips and point; a fielder in such a position 

  • A trench, ravine or narrow channel which was worn by water flow, especially on a hillside. 

  • A grooved iron rail or tram plate. 

  • A large knife. 

  • A drop kerb. 

  • an alleyway or side street. 

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