rising vs heaving

rising and heaving both are nouns.

Word	Noun	Adjective	Verb	Adverb
rising	Yes	Yes	No	No
heaving	Yes	No	No	No

As nouns, heaving is a hyponym of rising; that is, heaving is a word with a more specific, narrower meaning than rising:

rising (noun)	heaving (noun)
organized opposition to authority; a conflict in which one faction tries to wrest control from another	throwing something heavy (with great effort)
a movement upward; rise above the ground	breathing heavily (as after exertion)
	the act of lifting something with great effort
	an upward movement (especially a rhythmical rising and falling)

rising (adjective)	heaving (adjective)
advancing or becoming higher or greater in degree or value or status
sloping upward
coming to maturity
newly come into prominence