is a specific kind of: water-soluble vitamin.

is a broader term that covers: choline | inositol | pantothen, pantothenic acid | aneurin, antiberiberi factor, thiamin, thiamine, vitamin B1 | antipernicious anemia factor, cobalamin, cyanocobalamin, vitamin B12 | hepatoflavin, lactoflavin, ovoflavin, riboflavin, vitamin B2, vitamin G | adermin, pyridoxal, pyridoxamine, pyridoxine, vitamin B6 | folacin, folate, folic acid, pteroylglutamic acid, pteroylmonoglutamic acid, vitamin Bc, vitamin M | niacin, nicotinic acid | biotin, vitamin H.