impureness vs taint

impureness and taint both are nouns.

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

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

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

impureness (noun)	taint (noun)
the condition of being impure	the state of being contaminated

impureness (verb)	taint (verb)
	contaminate with a disease or microorganism
	place under suspicion or cast doubt upon