Equivalence (noun)

1. The state or quality of being equal, especially in value, measure, or worth.
2. The condition of being exchangeable or replaceable by something of equal value or worth.
3. A situation or relationship in which two things are equal in value, measure, or worth.

Origin:

Late 16th century: from french équivalence or late latin aequivalentia, from aequivalere "be equal" (see equivalent).

Examples:

1. The equivalence of money in different countries.
2. The equivalence of the two theories was shown by the experiments.
3. The equivalence of the measures for the study was established.
4. The equivalence of the education system was discussed by the experts.
5. The equivalence of the treatments was compared in the study.