engender vs propagate

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. 

propagate

verb
  • To generate; to produce. 

  • To cause to take effect on all relevant devices in a network. 

  • To spread from person to person; to extend the knowledge of; to originate and spread; to carry from place to place; to disseminate. 

  • To produce young; to be produced or multiplied by generation, or by new shoots or plants. 

  • To cause to spread to extend; to impel or continue forward in space. 

  • To cause to continue or multiply by generation, or successive production. 

  • To take effect on all relevant devices in a network. 

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