equivalent
Equal in value, meaning, or effect, though not identical.
Equivalent means equal in value, amount, meaning, or effect, even if not identical in form. When two things are equivalent, they're worth the same or do the same job, though they might look different.
In math, equivalent fractions like 1/2 and 2/4 represent the same amount. They look different but have equal value. When you solve an equation, you're finding what number is equivalent to the expression you started with.
In everyday life, equivalent things can be substituted for each other. A quarter is equivalent to 25 pennies in value, even though they're different sizes and quantities. If you're traveling, you might ask what a dollar is equivalent to in another country's currency. When a recipe calls for butter but you use margarine, you're using an equivalent ingredient.
When something is the equivalent of something else, it has the same power or impact. Being grounded for a week might be the equivalent of missing your best friend's birthday party: different situations, but equally disappointing.
Understanding equivalence helps you see that different forms can carry the same meaning or value, whether you're comparing fractions, currencies, or ideas.