In C.S. Lewis's interpretation, as used in his Narnia children's novels and elsewhere, "Worlds" are places separated not by distance but by more fundamental barriers. It is impossible to travel from one world to another, even if you travel forever. Heaven, Earth and Hell are different worlds. This usage conveys the same kind of meaning as spiritual plane or dimension.

Third World

Developing World

A "world" can also refer to a collections of levels in a video game, in which the levels share similar characteristics (i.e. fire, ice, jungle).

Any planet deemed comparable to Earth

The universe

Indigenous World

New World

The World Universities Debating Championship or Worlds

Parallel universe (fiction)

Western world

Arab world

Muslim World

Constructed world

Fantasy world

Developed World

Eastern world

The World (.hack) (a fictional online role-playing game)

The World (Descartes)

The World (South African newspaper)

The South, in reference to the North-South divide

First World

World (adjective), for world-wide sociological phenomena

The New York World, a defunct paper in the United States, often called "The World" for short

The World (archipelago), a group of artificial islands near Dubai

Second World

Southern world

Le Monde (French for "The World") is a French daily evening newspaper

Northern world

The World (radio program), a radio program produced by the BBC and Public Radio International

The World (Tarot card), a Major Arcana card in Tarot

The World (WWE), a WWE-themed restaurant/retail store complex in Times Square in New York City, now occupied by the Hard Rock Cafe

The world (philosophy), a key philosophical concept

The World, a cruise-ship type vessel, but with residential apartments that are owned, not rented

The World (Brad Paisley song), a song by Brad Paisley

National Geographic World, a magazine now published under the name National Geographic Kids

The World (Coos Bay), newspaper of Coos Bay, Oregon, United States

The World (newspaper), a proposed British compact newspaper

(destruction of the world or of world civilization)

The Fifth World (Native American mythology), is the coming world that will exist after the current world in Native American mythology

Imaginary world

Die Welt (German for "The World") is a German daily newspaper

Fourth World

The world (theology), a key theological concept

The Vancouver Daily World, a defunct paper in Canada, often called "The World" for short

Old World

The World (internet service provider), an internet service provider headquartered in Massachusetts

World (band), an indie rock outfit from Portland, Oregon

"World" (song), the name of several songs

The world; that is, the planet Earth

Chinese world (Sinosphere)

Indian world (Indian subcontinent, Indosphere)

The World (film), the English title of the 2004 Chinese film Shijie, directed by Jia Zhangke

The World, Dio Brando's stand in the Japanese manga JoJo's Bizarre Adventure and a famous internet meme.

The World, a daily international news programme on BBC World. Also shown on BBC Four in the United Kingdom

World (magazine), a evangelical newsmagazine

El Mundo (Spanish for "The World") is a Spanish daily newspaper (There are also separate newspapers of the same name in Venezuela, Puerto Rico, Argentina and Bolivia.)

The World Islands, an archipelago of 300 miniature man-made islands designed to resemble a map of the world being developed by Nakheel Properties, located 4.1 km offshore from Dubai.

World Airways, an airline (callsign: WORLD)