Equivalence refers to the state of being equal in value, function, or meaning. In mathematics, for example, two expressions are considered equivalent if they yield the same result when evaluated. This concept is crucial in various fields, including logic, where equivalent statements can be substituted for one another without changing the truth of an argument. In everyday language, equivalence can also apply to comparisons between different items or ideas. For instance, saying that a dollar is equivalent to 100 cents highlights their equal value in currency. Understanding equivalence helps in making clear and accurate comparisons across different contexts.