locution vs rhetoric

locution

noun
  • Style of discourse or usage, or any particular utterance in such style. 

  • A phrase or expression connected to an individual or a group of individuals through repeated usage. 

  • A supernatural revelation where a religious figure, statue or icon speaks, usually to a saint. 

  • The use of a word or phrase in an unusual or specialized way. 

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 locution and rhetoric occurred in a corpus of books? (source: Google Ngram Viewer )