• 天皇てんのう — emperor of Japan
• 天井てんじょう — ceiling
• 天使てんし — angel
• 天才てんさい — genius
• 楽天らくてん — optimism
• 晴天せいてん — clear sky

The character “天” originally represented a person’s head reaching toward the sky. It symbolizes heaven, sky, and things above us — often with a spiritual or natural tone.