The compound adjective "white-black" is a modern English formation that directly juxtaposes two fundamental color terms of Germanic origin. Both "white" and "black" descend from Proto-Germanic roots (hwītaz and blakaz respectively), which themselves have deeper Proto-Indo-European origins. The compound does not describe a mixed grey but leverages the archetypal opposition of the two colors to create a metaphorical meaning. It functions as a vivid, often figurative expression denoting a situation, distinction, or perspective characterized by absolute contrast, polarity, or binary opposition, drawing directly on the universal symbolic logic of light versus dark.

Structure: white (color) + black (color) - white: From Old English 'hwīt', of Germanic origin; related to Dutch 'wit' and German 'weiss'. Functions as an adjective meaning the color white. - black: From Old English 'blæc', of Germanic origin; related to Dutch 'zwart' and German 'schwarz'. Functions as an adjective meaning the color black.