機器
banner
beware
black
build
close
construct
construction
cray
creative
cross
danger
dark
dig
dirty
force
grain
ground
grunge
horizontal
labor
layout
man
manpower
mark
old
overlay
pattern
pigeon
road
rough
safety
shadow
sign
signage
square
stop
street
strip
stripe
symbol
texture
unclean
warning
website
wording
work
worker
yellow