Nevi is a medical term used to refer to moles, birthmarks, and other skin lesions. There are several synonyms for the word nevi, including melanocytic nevi, pigmented lesions, and dermal nevi. Other common synonyms for nevi include skin tags, solar lentigines, and freckles. These skin lesions can appear anywhere on the body and can vary in shape, size, and color. While most nevi are harmless, some may develop into skin cancer, which is why it is important to monitor any changes in the appearance of nevi and seek medical attention if necessary.