Earth
Ground, Land
noun
The kanji and the word are exactly the same. That means they share meanings as well.
Note that this word is often used in formal contexts or in literature. To say "earth" or "ground" casually, use 地面. For "land," it's 土地.
Although this is a single kanji all alone, it uses the on'yomi reading. This is the reading you learned with the kanji, you lucky duck.
雨のせいで地に水がたくさん入った。
A lot of water entered the ground due to the rain.
そのライオンは、大きなアフリカの地で生まれました。
That lion was born in the vast land of Africa.
ニックって、地に足がついてるよね。
Nick is down-to-earth, wouldn't you say?