counterpart vs ectype

counterpart

noun
  • Either of two parts that fit together, or complement one another. 

  • One who or that which resembles another. 

  • A duplicate of a legal document. 

  • One who or that which has corresponding functions or characteristics. 

  • Either half of a flattened fossil when the rock has split along the plane of the fossil. 

verb
  • To counterbalance. 

ectype

noun
  • An object in relievo or embossed. 

  • A copy, reproduction; especially as contrasted with the original, archetype, or prototype. 

  • An idea or impression that corresponds to external reality. 

  • An impression (in wax, clay, &c.) of a seal or medal. 

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