activity
adult
agreement
architect
architecture
blueprint
building
building contractor
building exterior
built structure
business
business person
businessman
caucasian ethnicity
construction frame
construction industry
construction machinery
construction site
construction worker
cooperation
crane
engineer
expertise
foreman
greeting
handshake
hardhat
human hand
industry
males
manager
men
mid adult
occupation
outdoors
planning
professional occupation
protective workwear
reflective clothing
safety
shaking
standing
success
teamwork
two people
work helmet
working