in contrast
US /ɪn ˈkɑːntræst/
UK /ɪn ˈkɑːntræst/

1.
used to show that something is very different from something else that has just been mentioned
:
•
The old system was slow and inefficient. In contrast, the new system is fast and reliable.
•
Many people prefer city life. In contrast, I enjoy the peace and quiet of the countryside.