pepper tree vs tree

pepper tree and tree both are nouns.

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

As nouns, tree is a hypernym of pepper tree; that is, tree is a word with a broader meaning than pepper tree:

pepper tree: small African deciduous tree with spreading crown having leaves clustered toward ends of branches and clusters of creamy flowers resembling lilacs
tree: a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms

As nouns, tree is a hypernym of pepper tree; that is, tree is a word with a broader meaning than pepper tree:

pepper tree: small Peruvian evergreen with broad rounded head and slender pendant branches with attractive clusters of greenish flowers followed by clusters of rose-pink fruits
tree: a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms

pepper tree (noun)	tree (noun)
small African deciduous tree with spreading crown having leaves clustered toward ends of branches and clusters of creamy flowers resembling lilacs	a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
small Peruvian evergreen with broad rounded head and slender pendant branches with attractive clusters of greenish flowers followed by clusters of rose-pink fruits	a figure that branches from a single root

pepper tree (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