The Earth of traditional Germanic cosmology, conceived as a middle realm between heaven (Asgard) and hell (Helheim); the abode of human beings, between those of the gods (Æsir) and the dead.
Earth: the Earth (our earth).
The Universe: our universe.
The Developed World (the developed world).
The Industrialized World (the industrialized world).
The Third World (the third world).
The First World (the first world).
Existence.
The Fourth World (the fourth world).
The Second World (the second world).
The Developing World (the developing world).