Synonyms for Jujube (same or very similar meaning)
WordNet sense 1 (spiny tree having dark red edible fruits):
Christ's-thorn, Jerusalem thorn, jujube bush, Ziziphus jujubaWordNet sense 2 (dark red plumlike fruit of Old World buckthorn trees):
Chinese date, Chinese jujubeFrom the ODE community, based on WordNetadd/edit