The term administration, as used in the context of government, differs according to jurisdiction.
In American usage, the term refers to the executive branch under a specific president (or governor, mayor, or other local executive), for example: the "Obamaadministration.” It can also mean an executive branch agency headed by an administrator: these agencies tend to have a regulatory function as well as an administrative function. On occasion, people in the United States will use the term to refer to the time a given person was president, e.g. "they have been married since the Carteradministration."
The term "administration" has been used to denote the executive branch in presidential systems of government.
Usage in Europe varies by country, but most typically the term 'administration' refers to managerial functions in general, which may include local governments, or the hierarchy of national and local government, that applies to a town or district. More specifically, it may refer to public administration, the business of administering public policy as determined by government. However, outside France, this usage of the word is uncommon.
The administration of a business includes the performance or management of business operations and decision making, as well as the efficient organization of people and other resources, to direct activities toward common goals and objectives.