ethereal vs supernatural

ethereal

adj
  • Consisting of ether; hence, exceedingly light or airy; tenuous; spiritlike; characterized by extreme delicacy, as form, manner, thought, etc. 

  • Pertaining to the (real or hypothetical) upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere. 

  • To do with diethyl ether. 

  • Pertaining to the immaterial realm, as symbolically represented by, or (in earlier epochs) conflated with, such atmospheric and extra-atmospheric concepts. 

supernatural

adj
  • Above nature; beyond or added to nature, often so considered because it is given by a deity or some force beyond that which humans are born with. 

  • Not of the usual; not natural; altered by forces that are not understood fully if at all. 

noun
  • Supernatural beings and events collectively (when used with definite article: "the supernatural") 

  • A supernatural being 

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