etymon vs origin

etymon

noun
  • The original or earlier form of an inherited or borrowed word, affix, or morpheme either from an earlier period in a language's development, from an ancestral language, or from a foreign language. 

  • Meaning as derived and conveyed thereby: The literal meaning of a term according to its origin, which may differ from its usual meaning when the latter relies on idiomatic conventions that are not conveyed by the term alone (that is, they must be known in other ways, such as experience, training, education, or dictionary lookup). 

origin

noun
  • Ancestry. 

  • The proximal end of attachment of a muscle to a bone that will not be moved by the action of that muscle. 

  • An arbitrary point on Earth's surface, chosen as the zero for a system of coordinates. 

  • The source of a river, information, goods, etc. 

  • The beginning of something. 

  • The point at which the axes of a coordinate system intersect. 

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