• 気温きおん — temperature
• 気圧きあつ — atmospheric pressure
• 気楽きらく — carefree, easygoing
• 気持きもち — feeling
• 気配けはい — presence, sign
• 元気げんき — healthy, energetic

The character “気” originally represents steam or vapor rising — a symbol of energy, breath, or atmosphere. It appears in many common phrases and plays a big role in describing emotions or unseen forces in daily life.

私わたしは 元気げんきです。
I’m feeling fine.

彼かれは 気配けはいを消けしていました。
He hid his presence.