following vs preparatory

following

adj
  • About to be specified. 

  • Blowing in the direction of travel. 

  • Coming next, either in sequence or in time. 

prep
  • After, subsequent to. 

noun
  • A thing or things to be mentioned immediately after. 

  • A group of followers, attendants or admirers; an entourage. 

  • Vocation; business; profession. 

preparatory

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

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