focusing vs topic

focusing

noun
  • The action of the verb to focus. 

adj
  • Used for or pertaining to focusing. 

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

topic

noun
  • Discussion thread. 

  • Subject; theme; a category or general area of interest. 

  • A musical sign intended to suggest a particular style or genre. 

adj
  • topical 

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