moulding vs ornamentation

moulding and ornamentation both are nouns.

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

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

Other hypernyms of moulding include decoration, ornament.

moulding (noun)	ornamentation (noun)
a preliminary sculpture in wax or clay from which a finished work can be copied	the act of adding extraneous decorations to something
a decorative recessed or relieved surface on an edge	something used to beautify
a decorative strip used for ornamentation or finishing	the state of being ornamented
sculpture produced by molding