enunciation vs inarticulacy

enunciation

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

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

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

inarticulacy

noun
  • The quality of being inarticulate. 

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