回復
かいふく · kaifuku · JLPT N3 · noun
recovery
🩹 回復 = return (回 kai) + restore (復 fuku): going back to how you were
回 means to turn or come back, as in 今回 (this time). 復 means to restore or repeat, as in 復習 (review). Together they mean getting back to a healthy state. Video games use the same word for HP recovery.
回 — enclosure 囗 + smaller 囗 inside
回 is a pictograph of a swirling whirlpool or coiled spiral, shown as nested squares in modern form. The original meaning was 'to revolve' or 'turn around,' which extended to 'return' and 'a time/occurrence.' It also appears as a phonetic in characters like 茴 and 廻.