Is ground flaxseed a grain or whole grain.

No- not a grain: Ground flaxseed is a seed, not a grain. Whereas 75-90% of the calories found in grains come from carbohydrates, only about 20% of calories in flaxseeds come from carbs- the rest is (healthy) fats and proteins. Only eat freshly ground flaxseed or it is likely to contain rancid oils. See http://whfoods.Com/genpage.Php?Tname=foodspice;dbid=81.