indeterminateness vs indeterminate

indeterminateness is a noun but indeterminate is not a noun.

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

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

indeterminateness (adjective)	indeterminate (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