Atoll and Enclave

Atoll noun - An island consisting of a circular coral reef surrounding a lagoon.

Enclave and atoll are semantically related In some cases you can use "Enclave" instead a noun "Atoll".

Enclave noun - An enclosed territory that is culturally distinct from the foreign territory that surrounds it.

Atoll and enclave are semantically related in land surrounded by body of water topic. You can use "Atoll" instead a noun "Enclave".