Belvedere and Platform

Belvedere noun - A freestanding airy structure in a scenic setting (as a park) typically offering commanding views.

Platform and belvedere are semantically related in pavilion topic. In some cases you can use "Platform" instead a noun "Belvedere".

Platform noun - A level usually raised surface.

Belvedere and platform are semantically related in stand or stage topic. Sometimes you can use "Belvedere" instead a noun "Platform".