Noun

• S: (n) contrast, direct contrast (the opposition or dissimilarity of things that are compared) "in contrast to"; "by contrast"
• S: (n) contrast (the act of distinguishing by comparing differences)
• S: (n) line, dividing line, demarcation, contrast (a conceptual separation or distinction) "there is a narrow line between sanity and insanity"
• S: (n) contrast (the perceptual effect of the juxtaposition of very different colors)
• S: (n) contrast (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))

Verb

• S: (v) contrast (put in opposition to show or emphasize differences) "The middle school teacher contrasted her best student's work with that of her weakest student"
• S: (v) contrast, counterpoint (to show differences when compared; be different) "the students contrast considerably in their artistic abilities"