"tree" - key terms from Wikipedia

apple tree
banyan tree
big tree
binary search tree
binary tree
brown tree	snake
characters of one tree	hill
cherry tree
christmas tree
coaching tree
decision tree
family tree
fault tree
fig tree
fruit tree
giving tree
green tree	frog
happy tree	friends
jade tree
joshua tree
mana tree
minimum spanning tree
o christmas tree
oak tree
olive tree
one tree	hill
one tree	hill episode
palm tree
phylogenetic tree
pine tree
porcupine tree
rubber tree
search tree
skill tree
spanning tree
spanning tree	protocol
splay tree
suffix tree
tea tree	oil
tree
tree	frog
tree	grows in brooklyn
tree	hill
tree	line
tree	of life
tree	species
tree	structure
under the cork tree
world tree
yew tree