Spirit, Energy
noun
The kanji and the word are exactly the same. That means they share meanings as well.
き
The reading is the same as the kanji that makes up this word. Lucky you!
その少年は気がつよい。
The boy is strong-willed.
今日のフライトも、気をつけてね。
Take care on today's flight, too.
気がついたら一人で川にいたんです。
I found myself alone in the river.