consistent vs decidable

consistent

adj
  • Compatible, accordant. 

  • Of a regularly occurring, dependable nature. 

  • Of a set of statements: such that no contradiction logically follows from them. 

noun
  • A kind of penitent who was allowed to assist at prayers, but was not permitted to receive the holy sacraments. 

  • Objects or facts that are coexistent, or in agreement with one another. 

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. 

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