兑换
duì huàn · HSK 7
to exchange
💱 DUI-ly HUAN-ding over cash — swap one currency for another
兑 (duì) means 'exchange' and 换 (huàn) means 'change/swap.' Together they form the standard word for converting money or redeeming vouchers. Think: you're at the counter doing a dual swap, handing over one thing and getting another back.
换 — hand radical 扌 + 奂 huàn (phonetic)
换 is a semantic-phonetic compound. The hand radical 扌 signals an action done with the hands, while 奂 supplies the sound huàn. The original sense of exchanging or swapping things by hand extended naturally to broader meanings like 'change' or 'replace'.