abrasive
abstract
arrowy
awn
bough
branch
bur
burr
cactus
cloak
closeup
coat
cover
creative
dark
gin
green
guard
incisive
insnare
keen
limb
mantle
naturally
nature
pattern
peaked
piercing
pitfall
pithy
pound
prevent
prick
protect
safeguard
sharp
snare
space
spiky
spine
spines
texture
thorn
thorns
trap
tree
trenchant
twig
veil
venom