This document discusses key characteristics for differentiating melanocytic nevi (moles) from melanoma. It describes analyzing lesions based on color, symmetry, organization, and dermoscopic patterns. Benign lesions generally have 3 or fewer colors, symmetry, and organized structures, while malignant lesions have more colors, asymmetry, and disorganized structures and patterns. Dermoscopy helps determine if a lesion appears benign, uncertain, or malignant.