diction vs pidgin English

diction

noun
  • Enunciation, pronunciation. 

  • Choice and use of words, especially with regard to effective communication. 

  • The effectiveness and degree of clarity of word choice and expression. 

pidgin English

noun
  • Any very basic English; broken English. 

  • Any English-lexifier pidgin. 

  • The Chinese pidgin English spoken in Canton and Hong Kong, later spreading throughout the Chinese and Southeast Asian coastal region. 

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