contrast

The opposition or dissimilarity of things that are compared.

“in contrast to”

“by contrast”

A conceptual separation or distinction.

The act of distinguishing by comparing differences.

The perceptual effect of the juxtaposition of very different colors.

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).

To show differences when compared; be different.

“the students contrast considerably in their artistic abilities”

Put in opposition to show or emphasize differences.

“The middle school teacher contrasted her best student's work with that of her weakest student”