rising vs falling

rising is a noun but falling is not a noun.

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

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

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