This is the 469th most frequent Japanese word.
木
Tree; wood.
The word '木' here refers to individual trees in a forest.
この森には高い木がたくさんあります。
There are many tall trees in this forest.
The word '木' here represents wood material used for carving.
彼は木の彫刻を作るのが得意です。
He is skilled at making wood sculptures.
The word '木' here is describing a singular tree visible from the window.