archetype vs touchstone

archetype

noun
  • A character, object, or story that is based on a known character, object, or story. 

  • A protograph (“original manuscript of a text from which all further copies derive”). 

  • An original model of which all other similar concepts, objects, or persons are merely copied, derivative, emulated, or patterned; a prototype. 

  • An ideal example of something; a quintessence. 

  • According to Swiss psychologist Carl Jung: a universal pattern of thought, present in an individual's unconscious, inherited from the past collective experience of humanity. 

verb
  • To depict as, model using, or otherwise associate an object or subject with an archetype. 

touchstone

noun
  • A stone used to check the quality of gold alloys by rubbing them to leave a visible trace. 

  • A standard of comparison or evaluation. 

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