maunder vs run on

maunder

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

  • To wander or walk aimlessly. 

run on

verb
  • To continue talking for a long time. 

  • Using a certain time zone. 

  • To continue without interruption 

  • To operate with a particular energy source. 

  • To carry on or continue (e.g. the type for a new sentence) without making a break or commencing a new paragraph. 

  • To make numerous drafts or demands for payment, as upon a bank. 

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