Are Radix Rehmanniae Praeparata and Radix Rehmanniae Glutinosa the same kind of Chinese medicine?

Radix Rehmanniae alias Radix Rehmanniae, both are a type of Chinese medicine.
Radix Rehmanniae Praeparata is the tuberous root of Radix Rehmanniae Praeparata, family Xuanzanaceae, which is processed and steamed. It is sweet in taste, slightly warm in nature, and belongs to the liver and kidney meridians. It has the effects of benefiting the essence and filling the marrow, tonifying the blood and nourishing the yin. It is clinically used in the treatment of irregular menstruation, blood deficiency and atrophy, lumbar and knee pain and weakness, blood leakage, premature whitening of hair, dizziness, tinnitus, etc. It is sticky and greasy in nature.
This product is sticky and greasy in nature, hindering digestion, and should not be taken by those who have stagnant gas and phlegm, bloating and pain in the epigastrium (abdomen), or loose stools with little food. When taking Chinese medicine, it should be rationally applied under the diagnosis of professional Chinese medicine practitioners, and should not be used on its own, so as to avoid discomfort to the body.