Instead Of (In Place Of)
2 related grammar points that express the same core idea - compared below so you can tell which one to reach for.
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かわりに / にかわって
Standing in for a person, formally.
～にかわって vs ～かわりに: Use にかわって: 社長にかわって挨拶する. It substitutes one party for another and takes a noun. かわりに is broader and can follow a verb phrase ('instead of doing X'), which にかわって cannot do.