comeback vs renewal

comeback

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

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

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

renewal

noun
  • The act of renewing. 

  • An offensive action made immediately after a parried one. 

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