native pear vs bush

native pear and bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
native pear	Yes	No	No	No
bush	Yes	Yes	Yes	No

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

Other hypernyms of native pear include shrub.

native pear (noun)	bush (noun)
tree bearing pear-shaped fruit with a thick woody epicarp	hair growing in the pubic area
	dense vegetation consisting of stunted trees or bushes
	a large wilderness area
	a low woody perennial plant usually having several major stems

native pear (adjective)	bush (adjective)
	not of the highest quality or sophistication

native pear (verb)	bush (verb)
	provide with a bushing