determinate vs determinateness

determinate is not a noun while determinateness is a noun.

Word	Noun	Adjective	Verb	Adverb
determinate	No	Yes	No	No
determinateness	Yes	No	No	No

determinate (noun)	determinateness (noun)
	the quality of being predictable with great confidence

determinate (adjective)	determinateness (adjective)
precisely determined or limited or defined; especially fixed by rule or by a specific and constant cause
not continuing to grow indefinitely at the apex
supplying or being a final or conclusive settlement