indefiniteness vs indeterminacy

indefiniteness and indeterminacy both are nouns.

Word	Noun	Adjective	Verb	Adverb
indefiniteness	Yes	No	No	No
indeterminacy	Yes	No	No	No

As nouns, indefiniteness and indeterminacy are synonyms defined as:

indefiniteness and indeterminacy: the quality of being vague and poorly defined

Other synonyms of indefiniteness include indefinity, indeterminateness, indetermination.

indefiniteness (noun)	indeterminacy (noun)
the quality of being vague and poorly defined	the quality of being vague and poorly defined