pelmet vs cornice

pelmet and cornice both are nouns.

Word	Noun	Adjective	Verb	Adverb
pelmet	Yes	No	No	No
cornice	Yes	No	Yes	No

As nouns, pelmet and cornice are synonyms defined as:

pelmet and cornice: a decorative framework to conceal curtain fixtures at the top of a window casing

Other synonyms of pelmet include valance, valance board.

pelmet (noun)	cornice (noun)
a decorative framework to conceal curtain fixtures at the top of a window casing	the topmost projecting part of an entablature
	a molding at the corner between the ceiling and the top of a wall
	a decorative framework to conceal curtain fixtures at the top of a window casing

pelmet (verb)	cornice (verb)
	furnish with a cornice