collocate vs diverge

collocate

noun
  • A component word of a collocation; a word that collocates with another. 

verb
  • (said of certain words) To be often used together, form a collocation; for example strong collocates with tea. 

  • To arrange or occur side by side. 

diverge

verb
  • To separate, to tend into a different direction (from another line or path). 

  • To become different; to run apart; to separate; to tend into different directions. 

  • To run apart; to separate; to tend into different directions. 

  • To become different, to separate (from another line or path). 

  • Not to converge: to have no limit, or no finite limit. 

  • Both stories start out the same way, but they diverge halfway through. 

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