architect
architectural
architecture
background
build
builder
business
cap
concept
construction
contractor
danger
design
development
employment
engineer
engineering
equipment
factory
hard
hardhat
hat
head
headgear
healthy
helmet
house
industrial
industry
job
maintenance
object
professional
project
property
protect
protection
safe
safety
security
site
table
team
teamwork
tool
white
work
worker
workman
yellow