heartburning vs gall

heartburning and gall both are nouns.

Word	Noun	Adjective	Verb	Adverb
heartburning	Yes	No	No	No
gall	Yes	No	Yes	No

As nouns, gall is a hypernym of heartburning; that is, gall is a word with a broader meaning than heartburning:

Other hypernyms of heartburning include bitterness, rancor, rancour, resentment.

heartburning (noun)	gall (noun)
intense resentment	the trait of being rude and impertinent; inclined to take liberties
	a digestive juice secreted by the liver and stored in the gallbladder; aids in the digestion of fats
	a feeling of deep and bitter anger and ill-will
	abnormal swelling of plant tissue caused by insects or microorganisms or injury
	a skin sore caused by chafing
	an open sore on the back of a horse caused by ill-fitting or badly adjusted saddle

heartburning (verb)	gall (verb)
	irritate or vex
	become or make sore by or as if by rubbing