falling vs rising

falling is not a noun while rising is a noun.

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

falling (noun)	rising (noun)
	organized opposition to authority; a conflict in which one faction tries to wrest control from another
	a movement upward; rise above the ground

falling (adjective)	rising (adjective)
becoming lower or less in degree or value	advancing or becoming higher or greater in degree or value or status
decreasing in amount or degree	sloping upward
coming down freely under the influence of gravity	coming to maturity
	newly come into prominence