ruling vs powerful

ruling is a noun but powerful is not a noun.

Word	Noun	Adjective	Verb	Adverb
ruling	Yes	Yes	No	No
powerful	No	Yes	No	Yes

ruling (noun)	powerful (noun)
the reason for a court's judgment (as opposed to the decision itself)

ruling (adjective)	powerful (adjective)
exercising power or authority	having great power or force or potency or effect
	having great influence
	displaying superhuman strength or power
	(of a person) possessing physical strength and weight; rugged and powerful
	strong enough to knock down or overwhelm

ruling (adverb)	powerful (adverb)
	(Southern regional intensive) very; to a great degree