By Bubba
The S-shaped architectural moulding is commonly referred to as "ogee" moulding. It features a concave curve that transitions into a convex curve, creating a distinctive S-shape. Ogee moulding is often used in decorative trim, cornices, and cabinetry to add elegance and detail to interior and exterior designs.
The resulting moulding with incomplete filling of the plastic resin is called in practice as short moulding.
An annulet is a small ring, or a ring-shaped moulding at the top of a column.
crown moulding
It's called coving It's called crown moulding. Coving is actually at the bottom, not the top. ITS CALLED CROWN MOULDING
They are called crown moulding.
It is called casing, which is a specific type of moulding, for exterior and interior door jams.
A convex moulding on a cornice is called a TORUS if it is semi-circular or an OVOLO if its not. When combined with a concave moulding it is called a CYMA where the concave is at the top or a OGEE where the convex is at the top.
An S-shaped curve is called a sigmoid curve. This term is used throughout the mathematical world and in healthcare settings.
sigmoid flexure
sigmoid flexure
Cyma