converging vs focusing

converging

adj
  • approaching each other at a point; convergent. 

noun
  • convergence 

focusing

adj
  • Pertaining to the direction of attention, effort, or energy to a particular audience or purpose over time. 

  • Used for or pertaining to focusing. 

noun
  • The action of the verb to focus. 

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