batch
block
bristle
build
building
burning
cement
city
concrete
construction
crane
danger
defense
emergency
extinguisher
extinguishing
firefighter
firestone
flammable
foam
fuel
gasoline
health
help
house
housing
industrial
industry
inflammable
metal
notch
petrol
pressure
progress
protect
protection
red
safeguard
safety
security
skyscraper
steel
stone
structure
suppression
tall
urban
workplace