deferral vs renewal

deferral

noun
  • An accrual. 

  • An act of deferring, a deferment. 

  • A prepayment. 

renewal

noun
  • The act of renewing. 

  • An offensive action made immediately after a parried one. 

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