Looking up...
公园里有很多树木。
There are many trees in the park.
Plants with woody stems that grow tall and have branches.
森林里有各种各样的树木。
There are various kinds of trees in the forest.
Refers to trees collectively, often in a natural or planted setting.
树木 is often used to describe trees in a natural or planted environment.
Combination of 树 (shù, tree) and 木 (mù, wood), emphasizing woody plants.
Used to refer to trees in general, often in a collective sense.