Think of 'enclave' as a space wholly embraced by another, like a unique room within a house. A Catholic enclave in a predominantly Protestant region.
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Distinct Identity
An enclave often maintains its own culture or characteristics, distinctly from its surroundings. Chinatown is an enclave full of rich heritage within the city.
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Not Physical Only
While typically physical, enclaves can also represent groups isolated socially but not necessarily by geography. An intellectual enclave in a society focused on sports.