Naevi, commonly known as moles, are a common occurrence on the skin that can either blend in with the skin or appear raised and noticeable. Although there are various types of moles, including congenital and acquired, their presence is often considered benign. Some synonyms for the term, naevi, include: birthmarks, beauty marks, blemishes, spot, and lesion. These synonyms are often used interchangeably, although some may refer to specific types of moles. Regardless of the label used to describe them, it's vital to pay attention to the size, shape, and color of moles as changes can indicate the presence of malignant melanoma, a potentially deadly form of skin cancer.