background
black
care
caution
chemical
color
container
danger
emergency
equipment
escape
evacuation
exit
extinguish
extinguisher
extinguishing
fire
firefighter
foam
grey
handle
hanging
hazard
help
home
hose
house
indoors
modern
nobody
object
office
portable
precaution
pressure
prevention
protection
red
rescue
safe
safety
security
sign
tool
urgency
wall
water
work