Which term describes a freckle?

The term that describes a freckle is "lentigo." Freckles are small, flat, brownish spots that typically appear on sun-exposed areas of the skin and are a result of an increase in the production of melanin due to sun exposure. Lentigos are characterized by their presence as small pigmented lesions, often found in clusters, which aligns with the common understanding of what freckles are.

In contrast, a nevus refers to a mole or a growth on the skin that can be benign or malignant, typically having a different texture and thickness than freckles. Vitiligo is a condition that causes loss of skin color in patches due to a decrease in melanin production, while albinism is a genetic condition resulting in little or no production of melanin throughout the body, affecting skin, hair, and eyes. Thus, both vitiligo and albinism involve a lack of pigmentation rather than its localized increase, as seen in freckles or lentigos.