還

It is a phono-semantic compound, consisting of:

辵 (chwak/착, “to walk slowly, to go”) as the semantic element;

睘 (gyeong, “to look in surprise”) as the phonetic element.

Very productive in both Sino-Korean academic vocabulary (순환, 상환) and common usage (반환, 귀환).

Common compounds:

귀환 (歸還) – return (homecoming, repatriation);

반환 (返還) – return, restitution;

상환 (償還) – repayment, reimbursement;

순환 (循環) – circulation, cycle;

회환 (回還) – to go back, to return again (more literary).