bearberry vs bush

bearberry and bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
bearberry	Yes	No	No	No
bush	Yes	Yes	Yes	No

As nouns, bush is a hypernym of bearberry; that is, bush is a word with a broader meaning than bearberry:

Other hypernyms of bearberry include shrub.

bearberry (noun)	bush (noun)
chiefly evergreen subshrubs of northern to Arctic areas	hair growing in the pubic area
deciduous shrub of southeastern and central United States	dense vegetation consisting of stunted trees or bushes
shrubby tree of the Pacific coast of the United States; yields cascara sagrada	a large wilderness area
	a low woody perennial plant usually having several major stems

bearberry (adjective)	bush (adjective)
	not of the highest quality or sophistication

bearberry (verb)	bush (verb)
	provide with a bushing