activity
architecture
area
base
basis
block
builder
building
business
businessman
career
cement
city
concrete
construction
danger
dawn
development
employee
engineering
equipment
foundation
frame
framework
high
house
housing
industrial
industry
infrastructure
iron
job
labor
laborer
lattice
light
metal
mold
operate
orange
outdoor
outside
people
proletariat
scaffold
sunny
sunshine
tower
work
worker