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time (as a measurable period)
시간이 많아요.
There is plenty of time.
시간을 잘 관리하세요.
Manage your time well.
Can refer to both specific and general periods of time.
occasion or opportunity
이번 시간은 정말 즐거웠어요.
This occasion was really enjoyable.
Used to describe a specific moment or event.
When referring to specific hours or minutes, '시간' is often used with numbers (e.g., '두 시간' = two hours).
In formal writing, '시간' is preferred over colloquial alternatives like '시각'.
From Middle Korean '시간' (sigan), derived from Chinese characters '時間' (time + interval).
In formal contexts, '시간' is often used to refer to scheduled or planned periods. In informal speech, it can also mean 'occasion' or 'opportunity.'