When two entities share similar qualities or performance levels, we often use the phrase "are on par" to describe their equivalence. However, there are a variety of synonyms that can be employed to express such a comparison. For example, you could say that two things are "equal", "identical", "comparable", "akin", "coequal", "congruent", "commensurate", "corresponding", or "equivalent". Each of these words can be used to convey an equal status or a matching level of performance between two things. So, the next time you need to express the idea that two things are equally matched, feel free to use any of these synonyms to expand your descriptive vocabulary.