echoism vs mimesis

echoism

noun
  • The practice of creating words or language by imitating sounds from the environment. 

mimesis

noun
  • The imitation of another's gestures, pronunciation, or utterance. 

  • The representation of aspects of the real world, especially human actions, in literature and art. 

  • The rhetorical pedagogy of imitation. 

  • The appearance of symptoms of a disease not actually present. 

  • Mimicry. 

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