extraordinary vs preternatural

extraordinary

adj
  • Not ordinary; exceptional; unusual. 

  • Remarkably good. 

  • Special or supernumerary. 

noun
  • Anything that goes beyond what is ordinary. 

preternatural

adj
  • Beyond or not conforming to what is natural or according to the regular course of things; strange. 

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