edge vs moulding

edge and moulding both are nouns.

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

As nouns, moulding is a hyponym of edge; that is, moulding is a word with a more specific, narrower meaning than edge:

edge: the outside limit of an object or area or surface; a place farthest away from the center of something
moulding: a decorative recessed or relieved surface on an edge

Other hyponyms of edge include border, hem, luff, border, molding, selvage, selvedge, berm, shoulder, roadside, wayside.

edge (noun)	moulding (noun)
a sharp side formed by the intersection of two surfaces of an object	a preliminary sculpture in wax or clay from which a finished work can be copied
the outside limit of an object or area or surface; a place farthest away from the center of something	a decorative recessed or relieved surface on an edge
a slight competitive advantage	a decorative strip used for ornamentation or finishing
the attribute of urgency in tone of voice	sculpture produced by molding
the boundary of a surface
a line determining the limits of an area

edge (verb)	moulding (verb)
lie adjacent to another or share a boundary
provide with an edge
advance slowly, as if by inches
provide with a border or edge