echoic vs mimetic

echoic

adj
  • Imitative of a sound; onomatopoeic. 

  • Of or pertaining to an echo 

mimetic

adj
  • Imitative. 

  • Exhibiting mimesis. 

noun
  • A substance with similar pharmacological effects to another substance. 

  • Something mimetic or imitative. 

  • A type of mnemonic in the form of a picture. 

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