imploration vs request

imploration

noun
  • The action of imploring; begging, beseeching. 

request

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

  • A message sent over a network to a server. 

  • Condition of being sought after. 

  • A formal message requesting something. 

verb
  • To ask (somebody) to do something. 

  • To ask for (something). 

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