There is no difference, both are a kind of Chinese medicine.

Sheng dihuang, also known as dihuang, raw ground, ground pith, native ground, dried dihuang, benzyl, panicle, milk seed, mother-in-law milk, Genisteaceae, dihuang genus, the tuberous roots of dihuang, perennial erect herbs. Prefer mild climate, sunny place, afraid of stagnant water. It has the effect of clearing away heat and dampness, nourishing Yin and nourishing blood.

The raw ground is irregular mass or oblong, the central part is expanded, the two ends are slightly thin, 6-12cm long, 3-6cm in true diameter, some are slender, slightly flat and twisted. Surface gray-black or brown-gray, extremely wrinkled, irregular transverse curvature. Weight, soft and tough, nodes gray-black, brown-black or black, slightly shiny, sticky. Air very small, sweet in flavor. Large, heavy pieces, black and oily nodes, better sweet flavor.

Expanded Information:

Raw geohuang prefers a mild and slightly humid climate

Distributed in Liaoning, Hebei, Henan, Shandong, Shanxi, Shaanxi, Gansu, Inner Mongolia, Jiangsu, Hubei and other provinces and regions. The main origin of Henan, Liaoning, Hebei, Shandong, Zhejiang. North Korea, Japan also have.

Baidu Encyclopedia - Sheng Di

Baidu Encyclopedia - Sheng Di Huang