deferral vs delay

deferral

noun
  • An act of deferring, a deferment. 

  • An accrual. 

  • A prepayment. 

delay

noun
  • A period of time before an event occurs; the act of delaying; procrastination; lingering inactivity. 

  • An audio effects unit that introduces a controlled delay. 

  • Synonym of promise (“object representing delayed result”) 

  • An amount of time provided on each move before one's clock starts to tick; a less common time control than increment. 

verb
  • To put off until a later time; to defer. 

  • To retard; to stop, detain, or hinder, for a time. 

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