expression
in contrast to; unlike; while; whereas
Used to contrast two situations, often with a nuance of disappointment or unexpected difference. Follows a noun or nominalized clause.
See also: 引き換える
去年の夏に引き換え、今年は涼しい日が多い。
In contrast to last summer, there are many cool days this year.
兄が社交的なのに引き換え、弟はとても無口だ。
Unlike his sociable older brother, the younger brother is very quiet.
Derived from the verb 引き換える (to exchange), literally meaning 'in exchange for', which developed into a contrastive expression.