Ziziphus jujuba vs bush

Ziziphus jujuba and bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ziziphus jujuba	Yes	No	No	No
bush	Yes	Yes	Yes	No

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

Other hypernyms of Ziziphus jujuba include shrub.

Ziziphus jujuba (noun)	bush (noun)
spiny tree having dark red edible fruits	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

Ziziphus jujuba (adjective)	bush (adjective)
	not of the highest quality or sophistication

Ziziphus jujuba (verb)	bush (verb)
	provide with a bushing