Rule
Part of speech: noun
Definition: A regulation, law, guideline. A ruler; device for measuring, a straightedge, a measure. Something to keep order.
Part of speech: verb
Definition: To regulate, be in charge of, make decisions for, reign over. To excel.
Example sentence: I am, indeed, a king, because I know how to rule myself.
Formula
Part of speech: noun
Definition: Any mathematical rule expressed symbolically.A symbolic expression of the structure of a compound.A plan of action intended to solve a problem.A formulation; a prescription; a mixture or solution made in a prescribed manner; the identity and quantities of ingredients of such a mixture.Drink given to babies to substitute for mother's milk.A syntactic expression of a proposition, built up from quantifiers, logical connectives, variables, relation and operation symbols, and, depending on the type of logic, possibly other operators such as modal, temporal, deontic or epistemic ones.
Example sentence: The most important single ingredient in the formula of success is knowing how to get along with people.