inconclusive vs decisiveness

inconclusive is not a noun while decisiveness is a noun.

Word	Noun	Adjective	Verb	Adverb
inconclusive	No	Yes	No	No
decisiveness	Yes	No	No	No

inconclusive (noun)	decisiveness (noun)
	the trait of resoluteness as evidenced by firmness of character or purpose
	the quality of being final or definitely settled

inconclusive (adjective)	decisiveness (adjective)
not conclusive; not putting an end to doubt or question