As nouns the difference between cartilage and chondroitin

is that cartilage is (anatomy) a type of dense, non-vascular connective tissue, usually found at the end of joints, the rib cage, the ear, the nose, in the throat and between intervertebral disks while chondroitin is (biochemistry) any of a range of mucopolysaccharides, derived from galactosamine and glucuronic acid, that occur in cartilage and bone.