Why is Bermuda not considered part of the West Indies?

Bermuda is not considered part of the West Indies because it is neither geologically nor spatially associated with that island group.1

While the West Indies are located between southeastern North America and northern South America, bordering the Caribbean Sea and the Atlantic, Bermuda is situated in the western North Atlantic Ocean, approximately 800 miles (1,300 km) north of the West Indies.231

Despite this lack of geographic or geological connection, Bermuda is often included in broader definitions of the region due to shared historical and cultural ties with the islands of the West Indies.34