crane vs heron

crane

noun
  • Any bird of the family Gruidae, large birds with long legs and a long neck which is extended during flight. 

  • A forked post or projecting bracket to support spars, etc.; generally used in pairs. 

  • An iron arm with horizontal motion, attached to the side or back of a fireplace for supporting kettles etc. over the fire. 

  • Ardea herodias, the great blue heron. 

  • A siphon, or bent pipe, for drawing liquors out of a cask. 

  • A mechanical lifting machine or device, often used for lifting heavy loads for industrial or construction purposes. 

verb
  • To pull up before a jump. 

  • To extend (one's neck). 

  • To raise or lower with, or as if with, a crane. 

heron

noun
  • A long-legged, long-necked wading bird of the family Ardeidae. 

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