effectualness vs powerfulness

effectualness and powerfulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
effectualness	Yes	No	No	No
powerfulness	Yes	No	No	No

As nouns, powerfulness is a hypernym of effectualness; that is, powerfulness is a word with a broader meaning than effectualness:

effectualness: power to be effective; the quality of being able to bring about an effect
powerfulness: possession of controlling influence

Other hypernyms of effectualness include power.

effectualness (noun)	powerfulness (noun)
power to be effective; the quality of being able to bring about an effect	possession of controlling influence