36 minutes ago, Nyleve Baar said:
Ok this has been bothering me. So I’m going to ask. What’s the difference between a grain and a seed?i know that all grains are seeds. Wheat, oats, barley...all of them are seeds. Why are some seeds not considered to be grains? Someone (see above) said that technically quinoa and buckwheat are not grains but they’re seeds. But WHY are they not grains just because they’re seeds?!? Sorry for yelling. I don’t understand.
The "true" grains are all seeds of various grasses, while the "pseudo-grains" are grain-like seeds of non-grasses. Buckwheat, for example, is close kin to rhubarb (let your rhubarb run to seed, and you'll see the likeness). Quinoa and Amaranth are related to beets and chard.
(ETA: This is the TL;DR version, but that's the gist of it.)