For questions pertaining to the overall metaphysical structure of a setting.
For questions pertaining to the overall metaphysical structure of a game world. This applies both when asking about the cosmology of a published setting and when asking about cosmological issues pertinent to an original setting. Classic cosmological questions in real-life are things like "How did the world begin", "Where do souls go when people die", and "What is the relationship between the mundane and the divine".