jabbering vs waffler

jabbering

noun
  • Speech that jabbers; gibberish. 

waffler

noun
  • One who waffles or rambles; a vague, unfocused speaker or writer. 

  • A waffle iron. 

  • One who waffles, or changes sides or positions frequently. 

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