discretionary vs voting

discretionary

adj
  • Available at one's discretion; able to be used as one chooses; left to or regulated by one's own discretion or judgment. 

voting

adj
  • Having an associated right for the holder to vote as an owner of business. 

noun
  • action of the verb to vote 

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