(in|by) contrast

used to highlight the differences between two or more things or people

The old house had a charming, rustic feel, whereas the new one, in contrast, is sleek and modern.
In the summer, the city is bustling with tourists and outdoor events; by contrast, the winter months are quiet and subdued.
John prefers to work independently, in contrast to Sarah, who thrives in a collaborative environment.
The professor's lectures are informative and engaging; by contrast, the textbook is dry and difficult to understand.
The first half of the movie was action-packed and fast-paced; in contrast, the second half was slow and introspective.