demur vs doubt

demur

verb
  • To scruple or object; to take exception; to oppose; to balk 

  • To interpose a demurrer. 

  • To delay; to pause; to suspend proceedings or judgment in view of a doubt or difficulty; to hesitate; to put off the determination or conclusion of an affair. 

noun
  • An act of hesitation as to proceeding; a scruple; also, a suspension of action or decision; a pause, a stop. 

doubt

verb
  • To be undecided about; to lack confidence in; to disbelieve, to question. 

noun
  • Disbelief or uncertainty (about something); (countable) a particular instance of such disbelief or uncertainty. 

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