tree vs trunk

tree and trunk both are nouns.

tree (noun)	trunk (noun)
a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms	the main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber
a figure that branches from a single root	luggage consisting of a large strong case used when traveling or for storage
	the body excluding the head and neck and limbs
	compartment in an automobile that carries luggage or shopping or tools
	a long flexible snout as of an elephant

tree (verb)	trunk (verb)
force a person or an animal into a position from which he cannot escape
plant with trees
chase an animal up a tree
stretch (a shoe) on a shoetree