hind leg vs knee

hind leg

noun
  • Either of the two legs towards the rear of a four-legged animal. 

knee

noun
  • In the horse and allied animals, the carpal joint, corresponding to the wrist in humans. 

  • The part of a garment that covers the knee. 

  • Any knee-shaped item or sharp angle in a line; an inflection point. 

  • In humans, the joint or the region of the joint in the middle part of the leg between the thigh and the shank. 

  • A piece of timber or metal formed with an angle somewhat in the shape of the human knee when bent. 

  • An act of kneeling on one knee, typically to acknowledge an injury or sacrifice or otherwise to show respect. 

  • A blow made with the knee; a kneeing. 

verb
  • To poke or strike with the knee. 

  • To move on the knees; to use the knees to move. 

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