地区【ちく】
district, section, sector
区域【くいき】
limits, boundary, domain, zone, sphere, territory, area (e.g. in programming languages)
区別【くべつ】
distinction, differentiation, classification
区間【くかん】
section (of track, etc.), segment, dimension, interval
区分【くぶん】
division, section, demarcation, partition, segmentation, subdivision, (traffic) lane, compartment, classification, sorting
区画【くかく】
division, section, compartment, block, plot, lot, partition, boundary
区役所【くやくしょ】
ward office, council (regional)
区切る【くぎる】
to divide, to separate, to partition, to demarcate, to delimit, to mark off, to punctuate, to mark off (with a comma), to insert pauses (between words or phrases when reading aloud), to space one's words
小選挙区【しょうせんきょく】
small electoral district, single-member constituency
区内【くない】
in the ward or borough
区長【くちょう】
head of a ward, mayor of a ward, chief administrator of a ward
区立【くりつ】
established by a ward, ward, municipal
区民【くみん】
ward residents
区切り【くぎり】
pause (in speech, writing, etc.), punctuation, break, end, (place to) stop, pause, milestone (e.g. in a project)
管区【かんく】
jurisdiction
管区気象台【かんくきしょうだい】
district meteorological observatory
区議【くぎ】
ward assemblyman
鉱区【こうく】
mining area, mine lot
特別区【とくべつく】
special ward, administrative subdivision of a prefecture that has a directly elected mayor and assembly, special economic zone (in China), special administrative region of China (e.g. Hong Kong), special district (of a nation with a federal structure)
学区【がっく】
school district, school area