Ministry (collective executive)
In constitutional usage in Commonwealth realms, a ministry (usually preceded by the definite article, i.e., the ministry) is a collective body of government ministers led by a head of government, such as a prime minister. It is described by Oxford Dictionaries as "a period of government under one prime minister". Although the term "cabinet" can in some circumstances be a synonym, a ministry can be a broader concept which might include office-holders who do not participate in cabinet meetings. Other titles can include "administration" (in the United States) or "government" (in common usage among most parliamentary systems) to describe similar collectives. The term is primarily used to describe the successive governments of the United Kingdom, Canada, Australia and New Zealand, which share a common political heritage.