laugh line vs gag

laugh line and gag both are nouns.

Word	Noun	Adjective	Verb	Adverb
laugh line	Yes	No	No	No
gag	Yes	No	Yes	No

laugh line (noun)	gag (noun)
the point of a joke or humorous story	restraint put into a person's mouth to prevent speaking or shouting
a wrinkle in the skin at the outer corner of your eyes	a humorous anecdote or remark intended to provoke laughter

laugh line (verb)	gag (verb)
	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