background
barrier
bars
brown
chain
close
color
cross
danger
door
enclose
entrance
exit
female
fence
fingers
gate
girl
grate
green
grid
hands
hold on
imprisonment
iron
jail
keep
link
lock
mesh
metal
net
no freedom
old
padlock
palms
pattern
prevent
prison
protect
pullover
rusty
safety
security
steel
strong
surface
wall
wire
woman