adult
back
background
beam
blue
brick
building
business
control
corridor
crime
danger
dark
darkness
duty
electric
flash
flashlight
guard
guardian
hall
hold
indoors
job
light
male
man
night
occupation
office
person
pocket
prevention
profession
professional
protect
protection
room
safeguard
safety
security
service
staff
uniform
wall
work
worker
young