indeterminate vs indeterminateness

indeterminate is not a noun while indeterminateness is a noun.

Word	Noun	Adjective	Verb	Adverb
indeterminate	No	Yes	No	No
indeterminateness	Yes	No	No	No

indeterminate (noun)	indeterminateness (noun)
	the quality of being vague and poorly defined

indeterminate (adjective)	indeterminateness (adjective)
not precisely determined or established; not fixed or known in advance
having a capacity for continuing to grow at the apex
of uncertain or ambiguous nature
not leading to a definite ending or result
(of a quantity) having no definite value, as an equation that cannot be solved