• 鎮静ちんせい — sedation; calming down
• 鎮痛ちんつう — pain relief; analgesia
• 鎮魂ちんこん — requiem; calming of spirits
• 鎮圧ちんあつ — suppression; putting down a revolt
• 鎮守ちんじゅ — local guardian deity; tutelary shrine
• 鎮しずめる — to calm, soothe, or pacify
• 鎮しずまる — to settle down; to become calm

With the metal radical 金, 鎮 suggests a heavy weight or bell that keeps things steady — pressing down unrest, easing pain, or calming people and spirits.