jujube vs drupe

jujube and drupe both are nouns.

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

As nouns, drupe is a hypernym of jujube; that is, drupe is a word with a broader meaning than jujube:

jujube: dark red plumlike fruit of Old World buckthorn trees
drupe: fleshy indehiscent fruit with a single seed: e.g. almond, peach, plum, cherry, elderberry, olive, jujube

Other hypernyms of jujube include edible fruit, stone fruit.

jujube (noun)	drupe (noun)
chewy fruit-flavored jellied candy (sometimes medicated to soothe a sore throat)	fleshy indehiscent fruit with a single seed: e.g. almond, peach, plum, cherry, elderberry, olive, jujube
dark red plumlike fruit of Old World buckthorn trees
spiny tree having dark red edible fruits