aged
barbed
border
boundary
branches
captive
close
communism
country
danger
edge
farming
fence
fencing
field
forest
freedom
ghetto
hard
horizontal
human
jail
liberty
limit
lost
metal
military
old
past
people
political
post
prison
prisoner
private
protection
refugee
security
sharp
snow
steel
strip
tree
union
ussr
victim
wall
war
winter
wire