heartwood vs tree

heartwood and tree both are nouns.

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

heartwood (noun)	tree (noun)
the older inactive central wood of a tree or woody plant; usually darker and denser than the surrounding sapwood	a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
	a figure that branches from a single root

heartwood (verb)	tree (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