jujube vs Chinese jujube

jujube and Chinese jujube both are nouns.

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

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

jujube and Chinese jujube: dark red plumlike fruit of Old World buckthorn trees

Other synonyms of jujube include Chinese date.

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