background
bar
barred
building
cage
cell
closed
concept
convict
criminal
dark
despair
empty
free
freedom
gaol
grate
grief
guilt
illegal act
imprison
imprisonment
incarcerate
inside
interior
iron
jail
light
lock
metal
modern
old
prison
punishment
rays
room
safety
secure
security
shadow
shine
sky
steel
sun
sunlight
sunny
sunshine
wall
window