圏

traffic area; traffic block

Music

circle of fifths

Biology

rhizosphere

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)

Kantō area; Kantō region

Kansai area; Kansai region

Tokyo area (esp. in ref. to Tokyo, Kanagawa, Saitama and Chiba); Tokyo region

wider Kinki region (Osaka, Kyoto, Nara, Shiga, Wakayama and Fukui prefectures); wider Kansai area

Meteorology; Geology

cryosphere

(within) walking distance

polar circle; polar region

outside Earth's atmosphere; outer space; exoatmosphere; exo-atmosphere

within the sphere of influence (of)

within Earth's atmosphere; inner space

greater metropolitan area; megalopolis; conurbation

Military

air defense identification zone; ADIZ

eurozone; euro zone; euro area

Greater East Asia Co-Prosperity Sphere

Islamic world; Muslim world

German-speaking countries; German language sphere

French-speaking world; francophone world; francophonie

out of the range of communication

sinophone world; Chinese-speaking world