Stay skeptical about fruit-containing supplements and pre-packaged juices:
A study was done on 27 supplements of pomegranate. Of the 27 tested only 5 appeared to be what the labels actually said.
Another study looked at 45 commercial pomegranate juice samples from 23 different manufacturers in the United States. They each said 100% pomegranate juice on the label, but most of them lied. Only 6 out of 23 were what they said they were.
Seed is an embryonic plant enclosed in a protective outer covering. The formation of the seed is part of the process of reproduction in seed plants. Seeds have been an important development in the reproduction and success of gymnosperms and angiosperms plants, that now dominate biological niches on land.
The term "seed" also has a general meaning of anything that can be sown, e.g. "seed" potatoes (tubers), "seeds" of corn or sunflower "seeds".
Many structures commonly referred to as "seeds" are actually dry fruits. Different groups of plants have other modifications, the so-called stone fruits (such as the peach) have a hardened fruit layer (the endocarp) fused to and surrounding the actual seed.
Nuts are the one-seeded, hard-shelled fruit of some plants with an indehiscent seed (acorn, hazelnut).