skeuomorphic affordance

skeuomorph	derivative object that retains ornamental design cues to a structure that were necessary in the original
affordance	where an object's sensory characteristics intuitively imply its functionality and use
	These terms came up today in a discussion as to whether the flat theming of Twitter Bootstrap (or that of iOS7 or the Windows 8 look which was almost called Metro) is detrimental. It was argued that a skeuomorphic design in which buttons were slightly raised was superior, by carrying more affordance, to the new coolness of 2013.