Energy
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton.
Law
Law is a system of rules that are created and enforced through social or governmental institutions to regulate behavior. Law is a system that regulates and ensures that individuals or a community adhere to the will of the state. State-enforced laws can be made by a collective legislature or by a single legislator, resulting in statutes, by the executive through decrees and regulations, or established by judges through precedent, normally in common law jurisdictions. Private individuals can create legally binding contracts, including arbitration agreements that may elect to accept alternative arbitration to the normal court process. The formation of laws themselves may be influenced by a constitution, written or tacit, and the rights encoded therein. The law shapes politics, economics, history and society in various ways and serves as a mediator of relations between people.
Mineral
A mineral is a naturally occurring chemical compound, usually of crystalline form and not produced by life processes. A mineral has one specific chemical composition, whereas a rock can be an aggregate of different minerals or mineraloids. The study of minerals is called mineralogy.
Petroleum
Petroleum is a naturally occurring, yellow-to-black liquid found in geological formations beneath the Earth's surface. It is commonly refined into various types of fuels. Components of petroleum are separated using a technique called fractional distillation i.e. separation of a liquid mixture into fractions differing in boiling point by means of distillation, typically using a fractionating column.
Policy
A policy is a deliberate system of principles to guide decisions and achieve rational outcomes. A policy is a statement of intent, and is implemented as a procedure or protocol. Policies are generally adopted by a governance body within an organization. Policies can assist in both subjective and objective decision making. Policies to assist in subjective decision making usually assist senior management with decisions that must be based on the relative merits of a number of factors, and as a result are often hard to test objectively, e.g. work-life balance policy. In contrast policies to assist in objective decision making are usually operational in nature and can be objectively tested, e.g. password policy.
Policy
When I see a merchant over-polite to his customers, begging them to taste a little brandy and throwing half his goods on the counter,—thinks I, that man has an axe to grind.
Charles Miner, Who'll turn Grindstones? Essays from the Desk of Poor Robert the Scribe. In The Gleaner (Wilkes-Barre, Pennsylvania) (1811).
Energy
You will soon be able to tax it.
Michael Faraday to William Gladstone on the future use of electricity
Policy
You have despoiled churches. You have threatened every corporation and endowment in the country. You have examined into everybody's affairs. You have criticised every profession and vexed every trade. No one is certain of his property, and nobody knows what duties he may have to perform to-morrow. This is the policy of confiscation as compared with that of concurrent endowment.
Benjamin Disraeli, speech on the University Education Bill (Ireland), House of Commons, March 11, 1873.—Selected Speeches of the Late Right Honourable the Earl of Beaconsfield, ed. T. E. Kebbel, vol. 2, p. 390 (1882).