contrast

contrast (http://definr.com/contrast)

     n 1: the opposition or dissimilarity of things that are compared;
          "in contrast to", "by contrast" [syn: direct contrast]
     2: the act of distinguishing by comparing differences
     3: a conceptual separation or demarcation: "there is a narrow
        line between sanity and insanity" [syn: line, {dividing
        line}, demarcation]
     4: the perceptual effect of the juxtaposition of very different
        colors
     v 1: put in contrast
     2: to show differences when compared; be different [syn: counterpoint]
     3: put in contrast