Ziziphus lotus vs bush

Ziziphus lotus and bush both are nouns.

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

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

Other hypernyms of Ziziphus lotus include shrub.

Ziziphus lotus (noun)	bush (noun)
shrubby deciduous tree of the Mediterranean region	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 lotus (adjective)	bush (adjective)
	not of the highest quality or sophistication

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