alarm
break
brick
case
chemical
combusted
combustion
danger
dangerous
emergency
extinguish
extinguisher
extinguishing
fire
firefighter
fireplace
flame
flammable
fume
guidance
handle
hazardous
heat
help
hose
hydrant
ignite
metal
nozzle
precaution
pressure
prevention
protect
protection
red
rescue
safe
safety
sign
square
symbol
tool
urgency
wall