abstract
antique
background
blank
board
break
chapped
cloven
corrosion
crack
dark
dirty
distinguish
divide
dust
element
foul
fracture
grubby
grunge
material
messy
nasty
natural
nature
old
panel
parting
pattern
plank
polluted
rough
rusty
separate
split
spot
stain
surface
texture
textured
timber
unclean
unsanitary
wall
wood