交换
jiāohuàn · HSK 4
exchange
🔄 交 (exchange/cross) + 换 (swap) = exchange + swap = barter
交 carries the sense of crossing or interchange (think 交通 traffic, 交流 communicate); 换 means to swap or replace. Together they double down on the idea of trading one thing for another.
交 — top 亠 + 父-like crossed legs
Originally a pictograph of a person standing with legs crossed, showing the idea of crossing or intersecting. From this concrete image, the meaning extended to abstract senses like 'exchange,' 'interact,' and 'hand over.' Modern uses such as 交流 (exchange) and 交通 (traffic) all trace back to this core notion of crossing.
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'.