inarticulation vs public speaking

inarticulation

noun
  • The state of being inarticulate; inarticulateness. 

  • An inarticulate or underarticulated utterance. 

  • Any point in the educational system in which the development of the individual is hindered. 

public speaking

noun
  • act of speaking to a group of people in a structured manner 

  • oratory (art of public speaking) 

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