virtuous vs virgin

virtuous is not a noun while virgin is a noun.

Word	Noun	Adjective	Verb	Adverb
virtuous	No	Yes	No	No
virgin	Yes	Yes	No	No

As adjectives, virtuous and virgin are synonyms defined as:

Other synonyms of virtuous include pure, vestal, virginal.

virtuous (noun)	virgin (noun)
	a person who has never had sex

virtuous (adjective)	virgin (adjective)
morally excellent	in a state of sexual virginity
in a state of sexual virginity	being used or worked for the first time