A committee responsible for the management of a company, etc.; a board of management; specifically (in Germany) the lower tier of a two-tier company board system responsible for the day-to-day running of the company: compare supervisory board.(Oxford Living Dictionaries).
a period of time during which a particular person or group is in control of a country: The period of Fascist rule is one people try to forget.(Cambridge Dictionary).
1.1 The system by which a nation, state, or community is governed.(Oxford Living Dictionaries).