rhetoric vs subdialect

rhetoric

noun
  • Meaningless language with an exaggerated style intended to impress. 

  • The art of using language, especially public speaking, as a means to persuade. 

adj
  • Synonym of rhetorical. 

subdialect

noun
  • A subdivision of a dialect 

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