As nouns the difference between albumin and casein

is that albumin is any of a class of monomeric proteins that are soluble in water, and are coagulated by heat; they occur in egg white, milk etc; they function as carrier protein for steroids, fatty acids, and thyroid hormones and play a role in stabilizing extracellular fluid volume while casein is a proteid substance present in both the animal and the vegetable kingdom found in milk or in the seeds of leguminous plants.