tree vs limb

tree and limb both are nouns.

Word	Noun	Adjective	Verb	Adverb
tree	Yes	No	Yes	No
limb	Yes	No	No	No

tree (noun)	limb (noun)
a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms	any projection that is thought to resemble a human arm
a figure that branches from a single root	the graduated arc that is attached to an instrument for measuring angles
	either of the two halves of a bow from handle to tip
	one of the jointed appendages of an animal used for locomotion or grasping: arm, leg, wing, flipper
	(astronomy) the circumferential edge of the apparent disc of the sun or the moon or a planet
	any of the main branches arising from the trunk or a bough of a tree

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