grisaille vs chiaroscuro

grisaille and chiaroscuro both are nouns.

Word	Noun	Adjective	Verb	Adverb
grisaille	Yes	No	No	No
chiaroscuro	Yes	No	No	No

As nouns, chiaroscuro is a hypernym of grisaille; that is, chiaroscuro is a word with a broader meaning than grisaille:

grisaille: chiaroscuro painting or stained glass etc., in shades of grey imitating the effect of relief
chiaroscuro: a monochrome picture made by using several different shades of the same color

grisaille (noun)	chiaroscuro (noun)
chiaroscuro painting or stained glass etc., in shades of grey imitating the effect of relief	a monochrome picture made by using several different shades of the same color