powerless vs powerful

powerless and powerful both are adjectives.

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

powerless (adjective)	powerful (adjective)
lacking power	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

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