valance board vs pelmet

valance board and pelmet both are nouns.

Word	Noun	Adjective	Verb	Adverb
valance board	Yes	No	No	No
pelmet	Yes	No	No	No

As nouns, valance board and pelmet are synonyms defined as:

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

Other synonyms of valance board include cornice, valance.

valance board (noun)	pelmet (noun)
a decorative framework to conceal curtain fixtures at the top of a window casing	a decorative framework to conceal curtain fixtures at the top of a window casing