enunciation vs timbre

enunciation

noun
  • Mode of utterance or pronunciation, especially as regards fullness and distinctness or articulation. 

  • That which is enunciated or announced; words in which a proposition is expressed; formal declaration 

  • The act of enunciating, announcing, proclaiming, or making known; open attestation; declaration. 

timbre

noun
  • The quality of a sound independent of its pitch and volume. 

  • The pitch of a sound as heard by the ear, described relative to its absolute pitch. 

  • The crest on a coat of arms. 

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