ineffective vs effectiveness

ineffective is not a noun while effectiveness is a noun.

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

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

ineffective (adjective)	effectiveness (adjective)
not producing an intended effect
lacking in power or forcefulness
lacking the ability or skill to perform effectively; inadequate