admixture vs impureness

admixture and impureness both are nouns.

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

As nouns, impureness is a hypernym of admixture; that is, impureness is a word with a broader meaning than admixture:

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

Other hypernyms of admixture include impurity.

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