marginal, peripheral, transition/transitional, twilight
The coastal area forms a marginal zone where fresh water gradually mixes with salt water.
battle, combat, military, war
buffer, demilitarized, exclusion, no-fly, no-go
The government declared a buffer zone between the two countries to prevent further conflict.
occupation, occupied, security
disaster
After the earthquake, the government set up aid stations throughout the disaster zone.
safety
The lifeguard created a safety zone at the beach to keep swimmers away from rocks.
nuclear-free, smoke-free, traffic-free, weapons-free
The hospital created a smoke-free zone to protect patients and staff from secondhand smoke.
earthquake, fault, seismic
alpine, arid, coastal, temperate
The coastal zone of the country attracts millions of tourists every summer.
economic, enterprise, fishing, free-trade, industrial
The country established a free-trade zone to attract foreign businesses and create new jobs.
relegation
After losing five matches in a row, the football club dropped into the relegation zone.