impureness vs admixture

impureness and admixture both are nouns.

Word	Noun	Adjective	Verb	Adverb
impureness	Yes	No	No	No
admixture	Yes	No	No	No

As nouns, admixture is a hyponym of impureness; that is, admixture is a word with a more specific, narrower meaning than impureness:

impureness: the condition of being impure
admixture: the state of impairing the quality or reducing the value of something

Other hyponyms of impureness include adulteration, debasement, alloy, contamination, taint, dirtiness, putridity, pollution.

impureness (noun)	admixture (noun)
the condition of being impure	the act of mixing together
	an additional ingredient that is added by mixing with the base
	the state of impairing the quality or reducing the value of something