tree vs burl

tree and burl both are nouns.

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

tree (noun)	burl (noun)
a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms	soft lump or unevenness in a yarn; either an imperfection or created by design
a figure that branches from a single root	a large rounded outgrowth on the trunk or branch of a tree
	the wood cut from a tree burl or outgrowth; often used decoratively in veneer

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