building
color
connect
connector
danger
dangerous
emergency
equipment
extinguish
extinguisher
faucet
fighter
fighting
fire
fire extinguisher
fire hose
fire hydrant
firefighting
hydrant
industrial
industry
isolated
metal
nozzle
object
pipe
plug
pressure
prevention
protect
protection
pump
red
rescue
safe
safety
security
steel
system
valve
wall
water