1. 사 (寺) -- a temple, shrine.

See also: 절

2. 사 (四) -- four.

This is the Sino-Korean form of the pure-Korean word 넷. It is preceded by the number 삼 and followed by 오.

See also: Counting in Korean

3. 사 (死) -- death.

4. 사 (私) -- privacy.

5. 사 (紗) -- a kind of thin silk.