Skin tags are small growths that hang off your skin. They're common and harmless, but can be removed if they're bothering you.
Skin tags and moles are both types of skin growths. A skin tag is a small, soft balloon-shaped benign skin growth connected to the skin by a thin stalk. Skin tags are extremely common and harmless. They tend to occur in areas where the skin folds, such as the eyelids, armpits, neck, groin, buttock folds, and under the breasts. The cause of skin tags is unknown but obese, middle-aged adults develop skin tags more often than other people. Removal of skin tags may involve freezing, strangulation by tying them off, snipping, and burning.
A mole is a skin growth that develops from clusters of pigment cells (melanocytes). Moles are typically found on areas of the skin exposed to the sun. A common mole is usually smaller than 1/4-inch-wide, is round or oval, has a smooth surface, a distinct edge, is often dome-shaped, and has an even color of pink, tan, or brown. Common moles are not cancerous, but in rare cases they can turn into melanoma, the most serious type of skin cancer.