comeback vs request

comeback

noun
  • A retort or answer, particularly a quick or clever one. 

  • A return (e.g. to popularity, success, etc.) after an extended period of obscurity. 

  • An occurrence of an athlete or sports team in a competition overcoming a substantial disadvantage in points to win or draw. 

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