A rule is:

• Rewrite rule, in generative grammar and computer science
• Standardization, a formal and widely-accepted statement, fact, definition, or qualification
• Operation, a determinate rule (method) for performing a mathematical operation and obtaining a certain result (Mathematics, Logic)
  • Unary operation
  • Binary operation
• Rule of inference, a function from sets of formulae to formulae (Mathematics, Logic)
• Rule of thumb, principle with broad application that is not intended to be strictly accurate or reliable for every situation. In Mathematics, Linguistics and Computer science, a rewrite rule ( phrase-structure rule or production) in Generative Standardization (or standardisation) is the process of developing and agreeing upon technical standards. In Mathematics, an operator is a function which operates on (or modifies another function In Mathematics, a unary operation is an operation with only one Operand, i In Mathematics, a binary operation is a calculation involving two Operands, in other words an operation whose Arity is two In Logic, a rule of inference (also called a transformation rule) is a function from sets of formulae to formulae A rule of thumb is a principle with broad application that is not intended to be strictly accurate or reliable for every situation Also often simply referred to as a rule
• Moral, an atomic element of a moral code for guiding choices in human behavior
• Heuristic, a quantized "rule" which shows a tendency or probability for successful function
• A regulation, as in sports
• Procedural law, a ruleset governing the application of laws to cases
  • A law, which may informally be called a "rule"
  • A court ruling, a decision by a court
• Norm (sociology), an informal but widely accepted rule, concept, truth, definition, or qualification (social norms, legal norms, coding norms)
• Norm (philosophy), a kind of sentence or a reason to act, feel or believe
• "Rulership" is the concept of governance by a government:
  • Military rule, governance by a military body
  • Monastic rule, a collection of precepts that guides the life of monks or nuns in a religious order where the superior holds the place of Christ

Other uses

• Rule (song), a song by rapper Nas
• Ruler, an instrument for measuring lengths
• Rule, a component of an astrolabe, circumferator or similar instrument
• Rule of thumb, Acquisition, a set of guidelines intended to ensure the profitability of businesses owned by the ultra-capitalist Ferengi in the fictional Star Trek universe
• The Rules, a bestselling self-help book
• RULE Project (Run Up-to-date Linux Everywhere) is a project that aims to use up-to-date Linux software on old PCs
• Rule engine, a software system that helps managing business rules
• Ja Rule, a hip hop artist
  • R.U.L.E., a 2005 greatest hits album by rapper Ja Rule

A moral is a message conveyed or a lesson to be learned from a story or event heuristic (hyu̇-ˈris-tik is a method to help solve a problem commonly an informal method The regulation of sport is usually done by a Regulatory agency for each Sport, resulting in a core of relatively invariant agreed rules Procedural law comprises the rule by which a court hears and determines what happens in civil or criminal proceedings The rules are designed to ensure Law is a system of rules enforced through a set of Institutions used as an instrument to underpin civil obedience politics economics and society A court order (or court ruling) is an official proclamation by a Judge (or panel of judges that defines the legal relationships between the parties to a hearing Social norms have been defined as "the rules that a group uses for appropriate and inappropriate values beliefs attitudes and behaviors Norms are sentences or sentence meanings with practical i e action-oriented (rather than descriptive explanatory or expressive import the most common of which Governance relates to decisions that define expectations, grant power, or verify performance. This article concerns the buildings occupied by monastics. For the life inside monasteries and its historical roots see Monasticism. " Rule " is the first single from rapper Nas ' 2001 album Stillmatic. A ruler, or rule, is an instrument used in Geometry, Technical drawing and engineering/building to measure distances and/or to rule straight The astrolabe is a historical Astronomical instrument used by classical astronomers, Navigators A rule of thumb is a principle with broad application that is not intended to be strictly accurate or reliable for every situation The Rules Time-Tested Secrets for Capturing the Heart of Mr Right is a best-selling 1995 book co-authored by Ellen Fein and Sherrie Schneider. RULE ( Run Up-to-Date Linux Everywhere) is a project that aims to use up-to-date Linux software on old PCs (5 years old or more by recompiling and changing some code A business rules engine is a Software system that executes one or more Business rules in a runtime production environment Jeffrey Atkins (born February 29 1976 Music career Atkins began his rap career in 1994 with the group Cash Money Click RULE is the sixth album by rapper Ja Rule, released November 9, 2004.

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