accident
advice
attention
background
bathroom
bucket
building
caution
clean
cleaning
cleanup
danger
drop
fall
floor
hall
hazard
hospital
hotel
hygiene
indoor
information
interior
light
lobby
maintenance
nobody
notice
object
plastic
precaution
prevention
public
reflection
room
safety
service
showing
sign
signal
signs
slide
slip
slippery
stairs
surface
symbol
warning
wet
yellow