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The act of distinguishing by comparing differences
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The range of optical density and tone on a photographic negative or print (or the extent to which adjacent areas on a television screen differ in brightness)
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The perceptual effect of the juxtaposition of very different colors
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A conceptual separation or distinction
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The opposition or dissimilarity of things that are compared
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Put in opposition to show or emphasize differences
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To show differences when compared; be different