confluence vs convergence

confluence

noun
  • A convergence or combination of forces, people, or things. 

  • The stream or body formed by the junction of two or more streams; a combined flood. 

  • The act of combining that occurs where two rivers meet. 

  • The place where two rivers, streams, or other continuously flowing bodies of water meet and become one, especially where a tributary joins a river. 

  • The proportion of cells, in a culture medium, that adhere to each other. 

  • A property describing which terms can be rewritten with other, equivalent terms. 

convergence

noun
  • The act of moving toward union or uniformity. 

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

  • The process or property of approaching some limiting value. 

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