magniloquence vs rhetoric

magniloquence

noun
  • The quality of being magniloquent; pompous discourse. 

rhetoric

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

  • Meaningless language with an exaggerated style intended to impress. 

adj
  • Synonym of rhetorical. 

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