contamination vs impureness

contamination and impureness both are nouns.

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

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

Other hypernyms of contamination include impurity.

contamination (noun)	impureness (noun)
the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors	the condition of being impure
the state of being contaminated
a substance that contaminates