entreaty vs request

entreaty

noun
  • The act of entreating or beseeching; a strong petition; pressing solicitation; begging. 

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 entreaty and request occurred in a corpus of books? (source: Google Ngram Viewer )