ineffectuality vs powerlessness

ineffectuality and powerlessness both are nouns.

Word	Noun	Adjective	Verb	Adverb
ineffectuality	Yes	No	No	No
powerlessness	Yes	No	No	No

As nouns, powerlessness is a hypernym of ineffectuality; that is, powerlessness is a word with a broader meaning than ineffectuality:

ineffectuality: lacking the power to be effective
powerlessness: the quality of lacking strength or power; being weak and feeble

Other hypernyms of ineffectuality include impotence, impotency.

ineffectuality (noun)	powerlessness (noun)
lacking the power to be effective	the quality of lacking strength or power; being weak and feeble