"zone" - key terms from Wikipedia

barolo zone
brillouin zone
buffer zone
canal zone
combat zone	wrestling
comix zone
dark zone
dead zone
demilitarized zone
development zone
drop zone
eastern time zone
end zone
exclusion zone
exclusive economic zone
export processing zone
free zone
fresnel zone
green zone
grid zone
habitable zone
intertidal zone
korean demilitarized zone
landing zone
mountain time zone
nanking safety zone
negative zone
neutral zone
north american eastern time zone
occupation zone
phantom zone
relegation zone
root zone
safety zone
special economic zone
special zone
standard time zone
strike zone
subduction zone
time zone
travelcard zone
twilight zone
urban enterprise zone
utm zone
war zone
wipeout zone
zapping zone
zone
zone	of the enders
zone	system