abstract
background
bark
by
concept
copy
copyspace
crack
cracks
design
detail
dressing
element
experience
expertise
find
furrowed
grow
grown
growth
hard
hardness
live
network
networked
networks
of
old
older
out
pattern
power
proven
resistant
robust
space
strength
strong
structure
textile
texture
tough
toughness
tree
trunk
virtue
wood