quip vs gag

quip and gag both are nouns.

Word	Noun	Adjective	Verb	Adverb
quip	Yes	No	Yes	No
gag	Yes	No	Yes	No

As verbs, quip and gag are synonyms defined as:

quip (noun)	gag (noun)
witty remark	restraint put into a person's mouth to prevent speaking or shouting
a witty saying	a humorous anecdote or remark intended to provoke laughter

quip (verb)	gag (verb)
make jokes or quips	struggle for breath; have insufficient oxygen intake
	make an unsuccessful effort to vomit; strain to vomit
	cause to retch or choke
	make jokes or quips
	be too tight; rub or press
	tie a gag around someone's mouth in order to silence them
	prevent from speaking out