maunder vs yackety-yak

maunder

verb
  • To speak in a disorganized or desultory manner; to babble or prattle. 

  • To wander or walk aimlessly. 

yackety-yak

verb
  • To talk pointlessly and uninterruptedly. 

noun
  • prolonged chatter; uninterrupted, idle talk; gossip 

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