extremity vs facet

extremity

noun
  • A limb (“major appendage of a human or animal such as an arm, leg, or wing”). 

  • The most extreme or furthest point of something. 

  • A hand or foot. 

  • An extreme measure. 

facet

noun
  • Any of the small joints at each segment of the spine that provide stability and help guide motion 

  • The narrow plane surface between flutings of a column; a fillet. 

  • One member of a compound eye, as found in insects and crustaceans. 

  • A smooth circumscribed surface. 

  • One of a series of things, such as steps in a project. 

  • Any one of the flat surfaces cut into a gem. 

  • A face of codimension 1 of a polytope. 

  • A criterion that can be used to sort and filter, such as the colour or size of products in an online store. 

  • One among many similar or related, yet still distinct things. 

verb
  • To cut a facet into a gemstone. 

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