powerful vs compelling

powerful and compelling both are adjectives.

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

powerful (adjective)	compelling (adjective)
having great power or force or potency or effect	tending to persuade by forcefulness of argument
having great influence	driving or forcing
displaying superhuman strength or power
(of a person) possessing physical strength and weight; rugged and powerful
strong enough to knock down or overwhelm

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