There is no difference between them. Jujube contains grey jujube.

Jujube is a general term, and Huizao is one of many jujube varieties. Junzao, Yuanling Jujube, Jinsixiaozao, Qingzao, Huanghetan Jujube, Lizao, Zanhuang Jujube, Shanxi Huping Jujube, etc. are all a variety of red dates.

Therefore, grey jujube is only a kind of jujube. Generally, there are more grey jujube, Junzao, Jinsi jujube and Tanzao in the market now, and there are not many other varieties of jujube, so there is a misunderstanding. Consumers generally call washed Ruoqiang grey jujube red jujube.

Extended information:

Features of Zizyphus jujuba:

Zizyphus jujuba, also known as Xinzheng Zizyphus jujuba, has a long inverted egg shape, orange-red skin and a thick core, which is sweeter than ordinary jujube. It originated in Xinzheng, Henan Province, and was introduced to all parts of China. Now it is distributed in Ruoqiang, Aksu, Alar, Qiemo and Kashgar in Xinjiang.

Among them, Ruoqiang has obvious geographical advantages, and the planted grey jujube has small stone, thick meat, thin skin and good taste, so Xinjiang Ruoqiang grey jujube is of good quality.

reference source: Baidu Encyclopedia-Xinjiang Jujube