What is the difference between retinol and vitamin A?

Retinol is a type of retinoid found in vitamin A. Vitamin A is composed of two parts: retinoids, which include retinol, and carotenoids which inckude beta-carotine. Retinol is a type of vitamin A found in animal products like liver, kidney, eggs, and dairy products. Carotenoids, which hold greater amounts of vitamin A, are found in plants like dark and yellow vegetables, carrots, and fruits.