3d
arrest
arrested
background
bar
barred
bars
behind
building
cage
cell
closed
clouds
concept
convict
correctional
crime
criminal
empty
free
freedom
gaol
grate
grief
guilt
illegal act
imprison
imprisonment
incarcerate
inside
interior
iron
jail
lock
metal
modern
old
prison
punishment
room
safety
secure
security
shadow
sky
steel
sun
sunlight
sunny
wall
window