request vs sue

request

verb
  • To ask for (something). 

  • To ask (somebody) to do 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. 

sue

verb
  • To seek by request; to make application; to petition; to entreat; to plead. 

  • To file a legal action against someone, generally a non-criminal action. 

  • To clean (the beak, etc.). 

  • To leave high and dry on shore. 

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