knee vs ulna

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. 

ulna

noun
  • The bone of the forearm that extends from the elbow to the wrist on the side opposite to the thumb, corresponding to the fibula of the hind limb. Also, the corresponding bone in the forelimb of any vertebrate. 

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