impurity vs putridity

impurity and putridity both are nouns.

Word	Noun	Adjective	Verb	Adverb
impurity	Yes	No	No	No
putridity	Yes	No	No	No

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

Other hyponyms of impurity include adulteration, debasement, admixture, alloy, contamination, taint, dirtiness, pollution.

impurity (noun)	putridity (noun)
the condition of being impure	the state of being putrid
worthless or dangerous material that should be removed