What is the difference between an archbishop and a cardinal?

What is the difference between an archbishop and a cardinal?

An archbishop is usually the bishop of a major metropolitan archdiocese. A cardinal is a member of the college of cardinals, and, according to current requirements, is usually at least a bishop; however, the regulation that a cardinal not already ordained to the episcopate be so ordained can be dispensed, as it was with Avery Cardinal Dulles, S.J., for example. So, with permission, it is possible for a layman or a priest to be a cardinal.

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