comeback vs revitalization

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. 

revitalization

noun
  • The process of revitalizing. 

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