affirmation vs request

affirmation

noun
  • That which is affirmed; a declaration that something is true. 

  • A form of self-forced meditation or repetition; autosuggestion. 

  • The solemn declaration made by Quakers and others incapable of taking an oath. 

request

noun
  • A formal message requesting something. 

  • 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. 

verb
  • To ask (somebody) to do something. 

  • To ask for (something). 

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