abstract
aging
bark
border
broken
circle
cleft
concentric
crack
crevice
cut
damaged
dark
decay
fallen
firewood
forestry
grained
grunge
hardwood
log
lumber
material
middle
oak
obsolete
old
part
pattern
pine
ring
rotten
rough
round
rusty
slice
split
stem
structure
stump
surface
texture
timber
tree
trunk
uneven
weathered
wood
years