Grass
Weed
noun
The kanji and the word are exactly the same. That means they share meanings as well.
Since this word is made up of a single kanji, it uses the kun'yomi reading. You learned this reading when you learned the kanji.
ここは草ばかりだ。
There's nothing but grass around here.
草の手入れは中々めんどくさいです。
Taking care of grass is quite a pain.
牛は草の他にも米などをたべますよ。
Other than grass, cows eat rice and things like that.