Essential oils are actually not "oils" at all. They are volatile organic seed oils for cooking and wellness compounds made up of a variety of chemicals but because they contain no lipids, they are not technically considered oils--at least nutritionally.
"Ordinary" vegetable oils, on the other hand, contain lipids and that's what makes them "oils". Some vegetable oils contain what scientists call essential fatty acids. These are fatty acids that the body needs but cannot make on its own. But they should not be confused with the botanical extracts known as essential oils.

Essential oils are oils that use in aromatherapy. These oils have a therapeutic property and if use correctly can overcome some health problems.