axiological vs elemental

axiological

adj
  • Of or relating to values themselves. 

  • Of or relating to value theory, the philosophical field of axiology. 

elemental

adj
  • Of, relating to, or being an element (as opposed to a compound). 

  • Of, or relating to a force of nature, especially to severe atmospheric conditions. 

  • Basic, fundamental or elementary. 

  • Of the ancient supposed elements of earth, air, fire and water. 

noun
  • A creature (usually a spirit) that is attuned with, or composed of, one of the classical elements: air, earth, fire and water or variations of them like ice, lightning, etc. They sometimes have unique proper names and sometimes are referred to as Air, Earth, Fire, or Water. 

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