decidable vs sure

decidable

adj
  • capable of being decided. 

  • in intuitionistic logic, a proposition P is decidable in a given theory if it can be proven from the theory that "either P or not P", i.e. in symbols: P∨¬P. 

  • describing a set for which there exists an algorithm that will determine whether any element is or is not within the set in a finite amount of time. 

sure

adj
  • Certain to act or be a specified way. 

  • Physically secure and certain, non-failing, reliable. 

  • Certain in one's knowledge or belief. 

adv
  • Without doubt, certainly. 

intj
  • Yes, expressing noncommittal agreement or consent. 

  • Yes; of course. 

  • You're welcome; polite response to being thanked. 

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