blue
building
business
city
clean
cleaner
climb
climbing
danger
dangerous
exterior
facility
glass
grid
group
high
highrise
installation
job
labor
maintain
maintenance
management
men
mirror
occupation
office
outside
people
person
property
reflect
reflection
repair
risk
scene
service
skyscraper
striped
structure
sunny day
tower
wash
washer
window
window cleaners
wipe
wiper
worker
working