Moles and warts can be distinguished by is from color, structure, and texture. A nevus is localized, formed by the proliferation of nevus cells or melanocytes, and is not contagious. Warts are a proliferation of squamous epithelium caused by human papilloma virus infection, wart-like proliferation, usually white, pink, is infectious skin disease. A mole should feel the same to the touch as the skin; it may be raised. If it is flat, it feels the same as the skin. And it doesn’t change over time it will become noticeable, usually not. Warts look like rough cauliflower-like growths that protrude from the surface of the skin and are prickly, soft or slightly hard to the touch, with a loose tissue structure that bleeds when touched. Moles can be left untreated, and can be treated with laser therapy or surgically removed if necessary for cosmetic purposes. Warts should be treated at an early stage, with localized medication, cryotherapy or photodynamic therapy.