The two are completely different products derived from different parts of the Hemp Plant.
Hemp Seed Oil is derived from the Seeds of the plant, whereas Whole Hemp Oil/Extract is from the flowers, leaves and stalks. Hemp Seed Oil is a great source of Omega 3 & 6, Essential fatty acids, that is great on salads etc. but does not have the beneficial properties you can find Hemp seed oil (commonly referred to as Hemp Oil) on the shelves at your local Coles, Woolworths and in most supermarkets and Service stations. Hemp Seed Oil is used on salads and soups.
CBD Oil (also known as Cannabis Oil, Full Spectrum, broad Spectrum, Hemp Extract, Raw Hemp Oil or Medical Marijuana) is extracted for medical use for its cannabinoid profile. CBD Oil is taken orally or topically. Knowing the difference between the two products are essential, usually the price is a good indication.