Enclave and exclave

Territory (or part of one) entirely surrounded by the territory of one other state

An enclave is a territory that is entirely surrounded by the territory of only one other state or entity. An enclave can be an independent territory or part of a larger one. Enclaves may also exist within territorial waters. Enclave is sometimes used improperly to denote a territory that is only partly surrounded by another state. Enclaves that are not part of a larger territory are not exclaves, for example Vatican City and San Marino and Lesotho are enclaved sovereign states.

This keyword could refer to multiple things. Here are some suggestions: