sphere; circle; range; category
inside (a region, area, etc.); within the range (of); within the sphere (of influence, etc.)
Greater Tokyo Metropolitan area; metropolitan area (of a capital)
outside (a region, area, etc.); out of range (of a mobile network, radar, etc.); outside the sphere (of influence, etc.); out of contention; out of reach
safety zone; buffer (e.g. against defeat)
one's daily milieu; neighbourhood; neighborhood; zone of life; sphere of life
eurozone; euro zone; euro area
economic bloc; ecosystem (of services, goods, etc. within a company or consortium)
Arctic Circle; the Arctic
greater metropolitan area; megalopolis; conurbation
air defense identification zone; ADIZ
English-speaking world; English-speaking countries; Anglosphere
(within) walking distance
outside Earth's atmosphere; outer space; exoatmosphere; exo-atmosphere
Tokyo area (esp. in ref. to Tokyo, Kanagawa, Saitama and Chiba); Tokyo region
within the sphere of influence (of)
urban area; metropolitan area; metropolitan region
within Earth's atmosphere; inner space
Islamic world; Muslim world
gravitational sphere (of a celestial body); gravitational field
communist bloc; Iron Curtain
business region; marketing area; commercial sphere; trading area; region in which a business operates
Chūkyō metropolitan area (most of Aichi, and parts of Gifu and Mie prefectures; centered around Nagoya); Chūkyō region
wider Kinki region (Osaka, Kyoto, Nara, Shiga, Wakayama and Fukui prefectures); wider Kansai area
polar circle; polar region
Greater East Asia Co-Prosperity Sphere
Antarctic Circle; the Antarctic
gravitational field (of a celestial body); sphere of gravitation; gravisphere
French-speaking world; francophone world; francophonie
emphasis mark (used in Japanese text in a way similar to underlining)
German-speaking countries; German language sphere
sphere (e.g. of knowledge, influence)
countries where Chinese characters are used or were historically used
sinophone world; Chinese-speaking world
traffic area; traffic block
public sphere; public domain
Chinese-character cultural sphere; Sinosphere; countries where Chinese characters are used or were historically used
Greater China (incl. Hong Kong, Macao, Taiwan and sometimes Singapore); Sinosphere
out of the range of communication
stratoplane (hypothetical type of airplane)
Spanish-speaking world; Spanish-speaking countries
(having a) good chance of being elected; being in the running
Coordination Committee on Multilateral Export Controls
center versus periphery theory
non-English-speaking world; non-Anglosphere
surroundings; vicinity; periphery
great circle sailing route
member states of the former Soviet bloc
biosphere reserve (UNESCO)
polar stratospheric cloud
tile matching the round wind
countries that do not use Chinese characters in their writing; non-kanji countries
hour circle; circle of declination
beneficiary zone; people who will enjoy the benefits of new public facilities, infrastructure, etc.
harm zone; people who will suffer the negative effects of new public facilities, infrastructure, etc. (e.g. pollution)
Kansai area; Kansai region
gnomonic chart; great-circle chart; great-circle map
gnomonic projection (in cartography); central projection
Grothendieck's Galois theory