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thing; object; stuff
이것은 책입니다.
This is a book.
그것은 무엇입니까?
What is that?
Used to refer to a thing or object in a general sense.
matter; affair; business
이것은 중요한 문제입니다.
This is an important matter.
Used to refer to an issue or concern in a formal or professional setting.
When using '것' as a subject, be sure to use the correct verb conjugation.
From Middle Korean.
Be careful not to confuse with other similar words like '물건' (object) or '일' (event).