contrast, direct contrast -- (the opposition or dissimilarity of things that are compared; "in contrast to", "by contrast")
contrast -- (the act of distinguishing by comparing differences)
line, dividing line, demarcation, contrast -- (a conceptual separation or distinction; "there is a narrow line between sanity and insanity")
contrast -- (the perceptual effect of the juxtaposition of very different colors)
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))
Overview of verb contrast
The verb contrast has 2 senses
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")
contrast, counterpoint -- (to show differences when compared; be different; "the students contrast considerably in their artistic abilities")