abstract
age
background
bark
broken
brown
circle
construction
contrast
cut
cutting
dead
decay
detail
dried
empty
end
isolated
layer
log
macro
material
natural
nature
oak
object
old
organic
part
pattern
plant
process
ring
rough
round
rusty
section
shape
slice
stump
texture
textured
tree
trunk
vertical
white
wood
wooden
years