accident
activate
alarm
alert
background
bell
box
break
building
business
button
control
danger
emergency
equipment
evacuation
factory
fire
flame
glass
hand
handle
hazard
help
hospital
industrial
object
office
panel
plant
press
prevention
protection
pull
push
red
rescue
ring
room
safe
safety
security
sign
sound
switch
symbol
system
wall
warning
white
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