impureness vs pollution

impureness and pollution both are nouns.

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

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

impureness: the condition of being impure
pollution: undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities

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

impureness (noun)	pollution (noun)
the condition of being impure	the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
	undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
	the state of being polluted