Contrast and comparison

～代わりに

instead of; in exchange for; in return

AI-written, reviewed by AI (ChatGPT)

How to form it

Has two uses: one thing takes the place of another, or one benefit is balanced with a cost or a favour in return.

With the 'trade-off' meaning the two sides are balanced: you get something good but accept something less good.

彼は料理を作ってくれる代わりに、片付けは私がする。
かれはりょうりをつくってくれるかわりに、かたづけはわたしがする。
He cooks, and in exchange I do the cleaning up.
この仕事は給料が高い代わりに、休みが少ない。
このしごとはきゅうりょうがたかいかわりに、やすみがすくない。
This job pays well, but in return there is little time off.
母の代わりに、私が参加した。
ははのかわりに、わたしがさんかした。
I took part in place of my mother.

～に代わって: に代わって is more formal and about acting for someone; 代わりに is broader and includes trade-offs.
～反面: 反面 are two sides of one subject; 代わりに is a trade-off or a replacement.