deferment vs ruling

deferment

noun
  • Officially sanctioned postponement of compulsory military service. 

  • An act or instance of deferring or putting off. 

ruling

adj
  • That rules; predominant; chief; reigning; controlling. 

noun
  • An order or a decision on a point of law from someone in authority. 

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