Moles are small, usually dark, skin growths that develop from pigment-producing cells in the skin (melanocytes).
Warts are raised bumps on your skin caused by the human papillomavirus (HPV). Warts have plagued humans for thousands of years — they have been discovered on 3,000-year-old mummies and were mentioned by Shakespeare. Although warts are generally not dangerous, they are ugly, potentially embarrassing, contagious, and they can be painful.