sexual morality vs virtue

sexual morality and virtue both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual morality	Yes	No	No	No
virtue	Yes	No	No	No

As nouns, sexual morality and virtue are synonyms defined as:

Other synonyms of sexual morality include chastity.

sexual morality (noun)	virtue (noun)
morality with respect to sexual relations	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