- Power: In social science and politics, power is the social production of an effect that determines the capacities, actions, beliefs, or conduct of actors.[1] Power does not exclusively refer to the threat or use of force (coercion) by one actor against another, but may also be exerted through diffuse means (such as institutions).[1][2] Power may also take structural forms, as it orders actors in relation to one another (such as distinguishing between a master and a slave), and discursive forms, as categories and language may lend legitimacy to some behaviors and groups over others.
- Authority: In sociology, authority is the legitimate or socially approved power which one person or a group possesses and practices over another. The element of legitimacy is vital to the notion of authority and is the main means by which authority is distinguished from the more general concept of power. Power can be exerted by the use of force or violence. Authority, by contrast, depends on the acceptance by subordinates of the right of those above them to give them orders or directives.
- Hierarchy: A hierarchical organization is an organizational structure where every entity in the organization, except one, is subordinate to a single other entity. This arrangement is a form of a hierarchy. In an organization, the hierarchy usually consists of a singular/group of power at the top with subsequent levels of power beneath them. This is the dominant mode of organization among large organizations; most corporations, governments, criminal enterprises, and organized religions are hierarchical organizations with different levels of management, power or authority. For example, the broad, top-level overview of the general organization of the Catholic Church consists of the Pope, then the Cardinals, then the Archbishops, and so on. Members of hierarchical organizational structures chiefly communicate with their immediate superior and with their immediate subordinates. Structuring organizations in this way is useful partly because it can reduce the communication overhead by limiting information flow.
- British Nobility: Before the 20th century, peerages were generally hereditary and (with a few exceptions) descended in the male line. The eldest son of a duke, marquess or earl almost always uses one of his father's subsidiary titles as a courtesy title; for instance, the eldest son of the Earl of Snowdon is called Viscount Linley. The modern peerage system is a vestige of the custom of English kings in the 12th and 13th centuries in summoning wealthy men (along with church officials and elected representatives for commoners) to form a Parliament. The economic system at the time was manorialism (or feudalism), and the privilege of being summoned to Parliament was related to the amount of land one controlled (a "barony"). In the late 14th century, this right (or "title") began to be granted by decree, and titles also became inherited with the rest of an estate under the system of primogeniture. Non-hereditary positions began to be created again in 1867 for Law Lords, and in 1958 generally. In 1958, the Life Peerages Act 1958 enabled (non-hereditary) life peers to sit in the House of Lords, and from then on the creation of hereditary peerages rapidly became obsolete, almost ceasing after 1964.
