What is the difference between saturated fat and regular fat?

There is no way to compare saturated fat with regular fat because in that context, regular fat does not exist! Carbon compounds can form three types of attachments with other atoms. They can share a single bond, a double bond, or a triple bond. A saturated fat is a fat where every carbon atom is attached to every other atom by a single bond. A mono-unsaturated fat, is a fat that contains one double bond. Poly unsaturated fats contain many double bonds.