gag vs sally

gag

noun
  • A joke or other mischievous prank. 

  • Mycteroperca microlepis, a species of grouper. 

  • Any suppression of freedom of speech. 

  • An order or rule forbidding discussion of a case or subject. 

  • A device to restrain speech, such as a rag in the mouth secured with tape or a rubber ball threaded onto a cord or strap. 

  • a device or trick used to create a practical effect; a gimmick 

  • A convulsion of the upper digestive tract. 

verb
  • To restrain someone's speech by blocking his or her mouth. 

  • To cause to heave with nausea. 

  • To pry or hold open by means of a gag. 

  • To choke; to retch. 

  • To experience the vomiting reflex. 

  • To restrain someone's speech without using physical means. 

  • To astonish (someone); to be at a loss for words. 

sally

noun
  • A witty statement or quip, usually at the expense of one's interlocutor. 

  • A kind of stonefly. 

  • A willow 

  • An excursion or side trip. 

  • An object made from the above trees' wood 

  • A sudden rushing forth. 

  • Any tree that looks like a willow 

  • A tufted woollen part of a bellrope, used to provide grip when ringing a bell. 

  • A wren. 

  • A member of the Salvation Army. 

  • A sortie of troops from a besieged place against an enemy. 

verb
  • To set out on an excursion; venture; depart (often followed by "forth.") 

  • To make a sudden attack (e.g. on an enemy from a defended position). 

  • To venture off the beaten path. 

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