efficacious vs powerful

efficacious and powerful both are adjectives.

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

efficacious (adjective)	powerful (adjective)
marked by qualities giving the power to produce an intended effect	having great power or force or potency or effect
producing or capable of producing an intended result or having a striking 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

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