- 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.
- Refers to still images produced from radiation-sensitive materials (sensitive to light, electron beams, or nuclear radiation), generally by means of the chemical action of light on a sensitive film, paper, glass, or metal. Photographs may be positive or negative, opaque or transparent. The concept does not include reproductive prints of documents and technical drawings, for which descriptors found under "" are more appropriate. The concept may include photographs made by digital means.