Both Uses

contrast
in
Harriet Tubman, by Petry
(Edited)

His swiftly moving figure was in strange contrast to the languorous slow motion of his hands just a few minutes before.†
Chpt 7 *

contrast = notable difference
She pondered over the shocking contrast between the life of a field hand in Dorchester County, Maryland, and the life she had known and enjoyed in Philadelphia and in Cape May, New Jersey.†
Chpt 13

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)