engender vs sire

engender

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

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

  • 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. 

sire

verb
  • to father; to beget. 

noun
  • A male animal that has fathered a particular offspring (especially used of domestic animals and/or in biological research). 

  • A lord, master, or other person in authority, most commonly used vocatively: formerly in speaking to elders and superiors, later only when addressing a sovereign. 

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