request vs retaliate

request

verb
  • To ask (somebody) to do something. 

  • To ask for (something). 

noun
  • A message sent over a network to a server. 

  • Act of requesting (with the adposition at in the presence of possessives, and on in their absence). 

  • Condition of being sought after. 

  • A formal message requesting something. 

retaliate

verb
  • To do something harmful or negative to get revenge for some harm; to fight back or respond in kind to an injury or affront. 

  • To repay or requite by an act of the same kind. 

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