abstract
age
annual
art
background
bark
black
circle
circular
collection
concentric
concept
cut
design
element
forest
graphic
growth
history
icon
illustration
isolated
log
natural
nature
object
organic
outline
pattern
plant
ring
ripple
rough
round
section
set
split
striped
stump
surface
symbol
texture
timber
tree
trunk
white
wood
wooden
year