concordat
/kɒnˈkɔːrˌdæt/Definitions
1. noun
A formal agreement between the Roman Catholic Church and a state, especially one that grants the church certain rights and privileges.
“The concordat between the church and the state has been in effect for over a century.”
2. noun
A general agreement or compromise, especially one reached after a period of disagreement or conflict.
“The company’s new policy was the result of a concordat between the management and the union.”