Buckwheat Groats
They share the name, come from the same plant, but each have different purpose and usage in various industries.
When people think about Buckwheat Pillows, they often don't realize that a Buckwheat Pillow is not filled with Buckwheat itself, but rather just the hulls.
The groats are eatable and used to make breads, pasta, buckwheat tea etc.
This makes a significant difference as there are "Buckwheat Pillows" on the market which are actually used as heat pads.
These type of pillows are usually filled with Buckwheat grains and not the hulls and are often a magnet for bugs (because bugs seek food sources).
Buckwheat Hulls
The hulls are not eatable either which is a key factor in keeping bugs again. Bugs in Buckwheat Pillows are a huge concern for many but in reality there is little to fear, if the pillow is filled with buckwheat hulls instead of buckwheat grains.
The same principle applies to millet pillows. They are also filled with millet hulls rather than the millet groats.
Check out our article if you want to know more about the difference between buckwheat hulls and millet hulls.