- Churches that are the principal church of a diocese, serving as the seat of the bishop, or of the archbishop, primate, patriarch, or pope of the diocese. They are generally grandiose structures and house the "cathedra," which is the throne of the bishop.
- Distinctions among villages, towns, and cities are relative and vary according to their individual regional contexts. Generally, cities designate large or important communities with population, status, and internal complexity greater than most towns in the region.
- Prints made from an etched printing plate, which is a metal plate on which a design is made by coating the plate with an acid-resistant substance, creating a design in the coating, and then exposing the plate to acid, which etches the plate where the metal is exposed. For designs incised directly into a copper plate using a burin or graver, use "engravings (prints)."
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