virtue vs chaste

virtue is a noun but chaste is not a noun.

Word	Noun	Adjective	Verb	Adverb
virtue	Yes	No	No	No
chaste	No	Yes	No	No

virtue (noun)	chaste (noun)
the quality of doing what is right and avoiding what is wrong
morality with respect to sexual relations
any admirable quality or attribute
a particular moral excellence

virtue (adjective)	chaste (adjective)
	morally pure (especially not having experienced sexual intercourse)
	abstaining from unlawful sexual intercourse
	pure and simple in design or style