Chinese date vs jujube

Chinese date and jujube both are nouns.

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

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

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

Other synonyms of Chinese date include Chinese jujube.

Chinese date (noun)	jujube (noun)
dark red plumlike fruit of Old World buckthorn trees	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