declarative vs declaratory

declarative

adj

  • Serving to declare; having the quality of a declaration. 

  • A way of programming that is most akin to just stating what is wanted, rather than having to describe how to do it. w:Declarative programming 

  • That declares a construct. 

  • Expressing truth. 

noun

  • Synonym of declaration (declarative statement) 

declaratory

adj

  • Serving to declare or explain 

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