engender vs set off

engender

verb
  • To assume form; to come into existence; to be caused or produced. 

  • To give existence to, to produce (living creatures). 

  • To bring into existence (a situation, quality, result etc.); to give rise to, cause, create. 

  • To endow with gender; to create gender or enhance the importance of gender. 

set off

verb
  • To begin; to cause; to initiate. 

  • To put into an angry mood; to start (a person) ranting or sulking, etc. 

  • To leave; to begin a journey or trip. 

  • To enhance by emphasizing differences. 

  • To offset, to compensate for: to reduce the effect of, by having a contrary effect. 

  • To deface or soil the next sheet; said of the ink on a freshly printed sheet, when another sheet comes in contact with it before it has had time to dry. 

  • To cause to explode, let off. 

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