sphere; circle; range; category
(being) within range (radio, commuting, etc.); (being) within the sphere (e.g. of influence)
(being) out of range (e.g. mobile network, radar, missiles); (being) out of contention; (being) beyond influence
safety zone; buffer (e.g. against defeat)
the capital city (often Tokyo) area (typically within 50 km of city's centre) (center)
one's daily milieu; neighbourhood; neighborhood; zone of life; sphere of life
economic bloc; ecosystem (of services, goods, etc. within a company or consortium)
English-speaking world; English-speaking countries; Anglosphere
outside Earth's atmosphere; outer space; exoatmosphere; exo-atmosphere
within the sphere of influence (of)
Arctic Circle; the Arctic
within Earth's atmosphere; inner space
gravitational sphere (of a celestial body); gravitational field
greater metropolitan area; megalopolis; conurbation
urban area; metropolitan area; metropolitan region
communist bloc; Iron Curtain
air defense identification zone; ADIZ
eurozone; euro zone; euro area
Greater East Asia Co-Prosperity Sphere
business region; marketing area; commercial sphere; trading area; region in which a business operates
gravitational field (of a celestial body); sphere of gravitation; gravisphere
emphasis mark (used in Japanese text in a way similar to underlining)
Islamic world; Muslim world
Antarctic Circle; the Antarctic
German-speaking countries; German language sphere
French-speaking world; francophone world; francophonie
countries where Chinese characters are used or were historically used
sphere (e.g. of knowledge, influence)
public sphere; public domain
Greater China (incl. Hong Kong, Macao, Taiwan and sometimes Singapore)
out of the range of communication
sinophone world; Chinese-speaking world
Spanish-speaking world; Spanish-speaking countries
non-English-speaking world; non-Anglosphere
Coordination Committee on Multilateral Export Controls
kanji cultural sphere; countries where Chinese characters are used or were historically used
center versus periphery theory
(having a) good chance of being elected (winning) (in an election)
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
traffic area; traffic block
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)
Grothendieck's Galois theory