Which term means equal in value or function?

The term that means equal in value or function is "equivalent." When items, concepts, or quantities are described as equivalent, it indicates that they have the same value or fulfill the same role, even if they may differ in appearance or form. For example, in mathematics, two fractions can be considered equivalent if they represent the same amount, even though their numerators and denominators are different.

In contrast, the other terms carry different meanings. "Identical" suggests that two things are exactly the same in every aspect, which is a stronger assertion than merely being equal in value or function. "Similar" indicates that two items or concepts share certain characteristics but are not equal or identical. "Comparable" means that two items can be compared, but it does not imply that they are equal in value or function; rather, it indicates that they are of a nature that allows for comparison. Therefore, "equivalent" is the most precise term for indicating equality in value or function.