rambling vs yackety-yak

rambling

noun
  • A long meandering talk with no specific topic or direction. 

  • A gentle hike. 

adj
  • Confused and irregular; awkward. 

  • Of a speech: meandering, long and digressing. 

yackety-yak

noun
  • prolonged chatter; uninterrupted, idle talk; gossip 

verb
  • To talk pointlessly and uninterruptedly. 

How often have the words rambling and yackety-yak occurred in a corpus of books? (source: Google Ngram Viewer )