Jujube and Red Date are the same thing. Jujubes are the less tasty, cheaper type of date, because they are not really dates! Jujubes are normally sun-dried and used for snacking, or for cooking as a flavouring in sweet and savoury dishes.
Dowell, P., Bailey, A. (1980) The Book of Ingredients, Dorling Kindersley. ISBN 0718119150.