Administration

Noun

1. The act of administering; government of public affairs; the service rendered, or duties assumed, in conducting affairs; the conducting of any office or employment; direction.
2. The executive part of government; the persons collectively who are entrusted with the execution of laws and the superintendence of public affairs; the chief magistrate and his cabinet or council; or the council, or ministry, alone, as in Great Britain.

   "Successive US administrations have had similar Middle East policies."

3. The country's government under the rule of a particular leader.

   "The Obama administration"

4. A body that administers; a body of administrators.
5. The act of administering, or tendering something to another; dispensation.

   "the administration of a medicine, of an oath, of justice, or of the sacrament"