jujube bush vs jujube

jujube bush and jujube both are nouns.

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

As nouns, jujube bush and jujube are synonyms defined as:

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

jujube bush (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