preparatory vs reasonable

preparatory

adj
  • Of or pertaining to preparation, having the purpose of making something or someone ready, preparative. 

reasonable

adj
  • Just; fair; agreeable to reason. 

  • Satisfactory. 

  • Not excessive or immoderate; within due limits; proper. 

  • Not expensive; fairly priced. 

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