prate vs talk out of one's ass

prate

verb
  • To talk much and to little purpose; to be loquacious; to speak foolishly. 

noun
  • Talk to little purpose; trifling talk; unmeaningful loquacity. 

talk out of one's ass

verb
  • To exaggerate, lie, or speak nonsense. 

How often have the words prate and talk out of one's ass occurred in a corpus of books? (source: Google Ngram Viewer )