convergence vs knee

convergence

noun
  • The intersection of three electron beams for red, green and blue onto a single pixel in a CRT. 

  • The evolution of similar structures or traits in unrelated species in similar environments; convergent evolution. 

  • A meeting place. 

  • The hypothesis that poorer economies' per capita incomes tend to grow faster than richer economies. 

  • The coordinated focusing of the eyes, especially at short range. 

  • The merging of distinct technologies, industries, or devices into a unified whole. 

  • The act of moving toward union or uniformity. 

  • The process or property of approaching some limiting value. 

knee

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

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

  • The part of a garment that covers the knee. 

  • 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 convergence and knee occurred in a corpus of books? (source: Google Ngram Viewer )