But while they're different, there are also a few main types of nipples, Protruding nipples involve the areola and top of the nipple forming a. The size of the areola helps the baby find the nipple when breastfeeding. This is a procedure that is used for women that have had some type of breast surgery. Nipples, areolae, or nips are widely held as the ta-ta signifier. Though there are only a few types of nipple classifications, the areola is what makes every boob a.