ovolo vs moulding

ovolo and moulding both are nouns.

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

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

ovolo: a convex molding having a cross section in the form of a quarter of a circle or of an ellipse
moulding: a decorative strip used for ornamentation or finishing

Other hypernyms of ovolo include molding.

ovolo (noun)	moulding (noun)
a convex molding having a cross section in the form of a quarter of a circle or of an ellipse	a preliminary sculpture in wax or clay from which a finished work can be copied
	a decorative recessed or relieved surface on an edge
	a decorative strip used for ornamentation or finishing
	sculpture produced by molding