chastity vs virtue

chastity and virtue both are nouns.

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

As nouns, chastity and virtue are synonyms defined as:

Other synonyms of chastity include sexual morality.

chastity (noun)	virtue (noun)
abstaining from sexual relations (as because of religious vows)	the quality of doing what is right and avoiding what is wrong
morality with respect to sexual relations	morality with respect to sexual relations
	any admirable quality or attribute
	a particular moral excellence