prickly ash vs tree

prickly ash and tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
prickly ash	Yes	No	No	No
tree	Yes	No	Yes	No

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

prickly ash: any of a number of trees or shrubs of the genus Zanthoxylum having spiny branches
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 prickly ash; that is, tree is a word with a broader meaning than prickly ash:

prickly ash: Australian tree having alternate simple leaves (when young they are pinnate with prickly toothed margins) and slender axillary spikes of white flowers
tree: a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms

prickly ash (noun)	tree (noun)
any of a number of trees or shrubs of the genus Zanthoxylum having spiny branches	a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
Australian tree having alternate simple leaves (when young they are pinnate with prickly toothed margins) and slender axillary spikes of white flowers	a figure that branches from a single root

prickly ash (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