modelling vs moulding

modelling and moulding both are nouns.

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

As nouns, modelling and moulding are synonyms defined as:

modelling and moulding: a preliminary sculpture in wax or clay from which a finished work can be copied

Other synonyms of modelling include modeling, molding.

As nouns, modelling and moulding are synonyms defined as:

Other synonyms of modelling include clay sculpture, modeling, mold, molding, mould.

modelling (noun)	moulding (noun)
the act of representing something (usually on a smaller scale)	a preliminary sculpture in wax or clay from which a finished work can be copied
a preliminary sculpture in wax or clay from which a finished work can be copied	a decorative recessed or relieved surface on an edge
sculpture produced by molding	a decorative strip used for ornamentation or finishing
	sculpture produced by molding