Jambs are the vertical sides of a doorway or window frame. They often serve as a decorative element and can feature sculptures or carvings.
Trumeau: A central pillar or post that divides a large doorway into two smaller openings.
Lintel: The horizontal beam that rests on top of the jambs, supporting the weight above the doorway.
The series of concentric arches that surround and decorate an arched opening, often found above jambs in Gothic architecture.