Explain acylglycerols

The most abundant class of food lipids is the acylglycerols, also known as glycerol esters of fatty acids, which dominate the composition of depot fats in animals and plants. The polar lipids are found almost entirely in  cellular membranes (phospholipids being the main component of the bilayer), with only very small amounts in depot fats. In some plants, glycolipids constitute the major polar lipids in cell membranes. Waxes are found as protective coatings on skin, leaves and  fruits