bars
baton
building
cage
cell
colony
correctional
crime
criminal
design
detention
detention center
dungeon
freedom
grid
guard
imprisonment
incarceration
investigation
isolation
jail
jailer
justice
lattice
law
legal
lock
male
man
officer
penitentiary
person
police
policeman
prison
prison bars
prison cell
prison officer
profession
protection
punishment
punishment cell
security
security guard
standing
strict
strict regime
uniform
worker
zone