Current article: Country subdivision
Country subdivision refers to the division of a country's territory for the sake of its administration, description or other such purpose. The resulting units of division are known generically as "country subdivisions".
The most common types of country subdivision are administrative divisions*, viz. divisions such as provinces, districts, municipalities, etc. A few countries have administrative divisions that are themselves called "divisions" or "subdivisions"; these are listed in the articles linked.
The second most common types of country subdivision are probably electoral divisions, viz. divisions such as constituencies and wards [Or perhaps different types of census division are the second most common...?]. Some countries, however, use these terms (or their native equivalents) to identify types of administrative division, viz. Namibia's constituencies and those countries listed in Ward (administrative division).
Other types of country subdvision are [census, planning, ...?]
Unlike geographical or geomorphological areas such as basins, deserts, valleys and the like, country subdivisions are abstract creations.
The term "country subdivision code" used in ISO 3166-2 refers to the ["primary administrative divisions of countries and ... dependent areas" – obtain actual quote].
Levels
edit[Explain use of levels, as in first (top) level administrative divisions, second-level admin divisions, etc]
* The article Administrative division also needs work, to distinguish between national administrative divisions (the administrative divisions of a country) and "administrative division" in general (e.g. the name of a company department, etc)
Material currently removed:
The regions of Brazil are one example of non-geomorphologic and non-administrative country subdivisions. They are defined along administrative boundaries but are not used directly as admnistrative entities.
Relevant to Subdivision: In a narrow sense the term subdivision may refer to specific entities 1) the Census subdivision (official term) of Canada and 2) to a small piece of land in the United States, see Subdivision (land). In the first case Census subdivisions are sub-divisions of the census divisions of Canada.