purity vs impure

purity is a noun but impure is not a noun.

Word	Noun	Adjective	Verb	Adverb
purity	Yes	No	No	No
impure	No	Yes	No	No

purity (noun)	impure (noun)
a woman's virtue or chastity
being undiluted or unmixed with extraneous material
the state of being unsullied by sin or moral wrong; lacking a knowledge of evil

purity (adjective)	impure (adjective)
	(used of persons or behaviors) immoral or obscene
	combined with extraneous elements
	having a physical or moral blemish so as to make impure according to dietary or ceremonial laws