abstract
aged
ages
antique
backdrop
background
bar
blame
bole
broken
brown
change
crack
detail
duration
firewood
furrow
grain
groove
grunge
hardwood
heartwood
horizontal
leak
line
log
lumber
mar
material
mortise
naturally
nature
old
pattern
raw
rift
rough
slit
split
stalk
stem
structure
surface
texture
timber
tree
trunk
vintage
wall
wood