• 中止ちゅうし — suspension; cancellation
• 水中すいちゅう — underwater
• 集中しゅうちゅう — concentration
• 真まん中なか — center
• 途中とちゅう — on the way; in the middle of
• 中学校ちゅうがっこう — junior high school
• 一日中いちにちじゅう — all day long
• 中国ちゅうごく — China
• 中華料理ちゅうかりょうり — chinese food

The kanji “中” originally depicted a vertical line running through a box, symbolizing something at the center. It's a high-frequency character essential for spatial, temporal, and conceptual uses in Japanese — from geography (中国) to mental focus (集中).