伤痕
shāng hén · HSK 7
scar
🩹 伤 wound + 痕 mark = a wound-mark left on the skin: a scar
伤 means wound or injury; 痕 means a mark, trace, or imprint. Put them together and you get the lasting mark a healed wound leaves behind. 痕 also shows up in 痕迹 (trace) and 泪痕 (tear-stain), so think of it as any leftover mark.
伤 — person radical 亻 + 㿝 (phonetic)
伤 is the simplified form of 傷. It combines the person radical 亻, indicating a human being affected, with a phonetic component derived from 昜. The original sense was a wound or injury to a person, which extended to mean 'to hurt,' 'injury,' and figuratively 'to grieve' or 'sorrow.'