abstract
age
aged
ancient
annual
backdrop
background
bark
circle
circular
concept
count
curve
cut
deforest
desktop
destruction
disaster
environment
firewood
forest
forestry
grain
gray
growth
nature
old
organic
outdoor
pattern
perennial
plant
ring
rot
saw
science
splinter
stem
stump
texture
timber
time
tree
trunk
weathered
wild
wood
wooden
woody
years