cornice vs moulding

cornice and moulding both are nouns.

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

As nouns, moulding is a hypernym of cornice; that is, moulding is a word with a broader meaning than cornice:

Other hypernyms of cornice include molding.

cornice (noun)	moulding (noun)
the topmost projecting part of an entablature	a preliminary sculpture in wax or clay from which a finished work can be copied
a molding at the corner between the ceiling and the top of a wall	a decorative recessed or relieved surface on an edge
a decorative framework to conceal curtain fixtures at the top of a window casing	a decorative strip used for ornamentation or finishing
	sculpture produced by molding

cornice (verb)	moulding (verb)
furnish with a cornice