Galactomannan is a derived term of galactose.

As nouns the difference between galactomannan and galactose

is that galactomannan is (carbohydrate) any of a class of polysaccharides, found in many gums, having a backbone composed of mannose with galactose sidechains while galactose is (carbohydrate) a monosaccharide found, along with lactose, in dairy products, and is synthesized by the body where it is found associated with glycolipids and glycoproteins.