convergence vs intersection

convergence

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

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

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

  • The act of moving toward union or uniformity. 

  • The process or property of approaching some limiting value. 

intersection

noun
  • Any overlap, confluence, or crossover. 

  • The junction of two (or more) paths, streets, highways, or other thoroughfares. 

  • The element where two or more straight lines of synchronized skaters pass through each other.http://www.isu.org/vsite/vcontent/content/transnews/0,10869,4844-128590-19728-18885-295370-3787-4771-layout160-129898-news-item,00.html 

  • The pullback of a corner of monics. 

  • The point or set of points common to two geometrical objects (such as the point where two lines meet or the line where two planes intersect). 

  • The set containing all the elements that are common to two or more sets. 

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