pretzel: glazed and salted cracker typically in the shape of a loose knot
cracker: a thin crisp wafer made of flour and water with or without leavening and shortening; unsweetened or semisweet
hurler's syndrome: hereditary disease (autosomal recessive) consisting of an error is mucopolysaccharide metabolism; characterized by severe abnormalities in development of skeletal cartilage and bone and mental retardation