All 3 Uses

contrast
in
Metamorphosis
(Edited)

"That was the voice of an animal", said the chief clerk, with a calmness that was in contrast with his mother's screams.
Part 1 *

in contrast = a comparison that shows differences
Gregor, in contrast, had become much calmer.
Part 1

in contrast = in a comparison that shows differences
The family was totally preoccupied with the violin playing; at first, the three gentlemen had put their hands in their pockets and come up far too close behind the music stand to look at all the notes being played, and they must have disturbed Gregor's sister, but soon, in contrast with the family, they withdrew back to the window with their heads sunk and talking to each other at half volume, and they stayed by the window while Gregor's father observed them anxiously.
Part 3

Definitions:

(1) (contrast as in: contrast their writing styles)
point to differences between; or compare to show differences
(2) (contrast as in: there is a contrast)
a difference -- especially a notable difference; or the side-x-side arrangement of things that draws attention to an unmissable difference
(3) (contrast as in: sharpen the picture contrast)
the difference between tones of an image -- as in a photo or video -- such as the quality of brightness or the intensity of shades or colors
(4) (meaning too rare to warrant focus)