reciprocal

adjective | \ ri-ˈsi-prə-kəl \ | re·cip·ro·cal

1. a : mutual 2

   b : bilateral a reciprocal contract

2. : characterized by correspondence or equivalence especially in return or response with another of the same category an … agreement permitting the reciprocal use of each other's land —Ingham v. Block, 351 S.W.3d 96 (2011) also : marked by such correspondence or equivalence between its own components a reciprocal arrangement : marked by such correspondence or equivalence between its own components a reciprocal arrangement

3. : marked by reciprocity between states