cock
danger
decorative
device
emergency
fire hydrant
firecock
firefighting
fireplug
fireproof
firepump
fittings
hazard
hazardous
hydrant
iron
lisbon
maintenance
nosepiece
object
old
pavement
plug
pressure
prevention
protection
public
red
reddish
risk
safe
safety
security equipment
sign
single
steel
stony
supply
valve
wall