Ziziphus jujuba vs jujube

Ziziphus jujuba and jujube both are nouns.

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

As nouns, Ziziphus jujuba and jujube are synonyms defined as:

Other synonyms of Ziziphus jujuba include Christ's-thorn, Jerusalem thorn, jujube bush.

Ziziphus jujuba (noun)	jujube (noun)
spiny tree having dark red edible fruits	chewy fruit-flavored jellied candy (sometimes medicated to soothe a sore throat)
	dark red plumlike fruit of Old World buckthorn trees
	spiny tree having dark red edible fruits