effectualness vs effectiveness

effectualness and effectiveness both are nouns.

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

As nouns, effectualness and effectiveness are synonyms defined as:

effectualness and effectiveness: power to be effective; the quality of being able to bring about an effect

Other synonyms of effectualness include effectivity, effectuality.

effectualness (noun)	effectiveness (noun)
power to be effective; the quality of being able to bring about an effect	power to be effective; the quality of being able to bring about an effect
	capacity to produce strong physiological or chemical effects