Papula is a medical term used to refer to a small, raised bump on the skin. There are a few different synonyms for papula that are commonly used in medical circles. One common synonym is "papule," which is used to describe a small, solid elevation of the skin that is usually less than one centimeter in diameter. Another synonym for papula is "pimple," which typically refers to a papula that has become inflamed due to infection or other factors. More colloquial synonyms for papula include "zit" and "spot," both of which refer to small, raised bumps on the skin that can be unsightly and uncomfortable.