arise vs occur

arise

verb
  • To spring up; to come into action, being, or notice; to become operative, sensible, or visible; to begin to act a part; to present itself. 

  • To come up from a lower to a higher position. 

  • To come up from one's bed or place of repose; to get up. 

occur

verb
  • To come or be presented to the mind; to suggest itself. 

  • To happen or take place. 

  • To present or offer itself. 

  • To be present or found. 

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