decidable vs definite

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. 

definite

adj
  • Determined; resolved; decided. 

  • Having distinct limits. 

  • Designating an identified or immediately identifiable person or thing, or group of persons or things 

  • Free from any doubt. 

noun
  • A word or phrase that designates a specified or identified person or entity. 

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