discernment vs vertu

discernment and vertu both are nouns.

Word	Noun	Adjective	Verb	Adverb
discernment	Yes	No	No	No
vertu	Yes	No	No	No

As nouns, vertu is a hyponym of discernment; that is, vertu is a word with a more specific, narrower meaning than discernment:

Other hyponyms of discernment include connoisseurship, virtu, style, trend, vogue, delicacy, discretion, culture.

discernment (noun)	vertu (noun)
the trait of judging wisely and objectively	artistic quality
the mental ability to understand and discriminate between relations	love of or taste for fine objects of art
the cognitive condition of someone who understands
perception of that which is obscure
delicate discrimination (especially of esthetic values)