Subnational entity is a generic name for an administrative region within a country (normally with a local government encompassing multiple municipalities, counties or provinces with a certain degree of autonomy in a varying number of matters. It is separate from other forms of dependent areas.
Designations
Some of the designations for subnational entities are:
... DB is the abbreviation for Deutsche Bahn, the major German railway company
DB is the abbreviation of Dominion Breweries[?], a major beer brewing company of New ...