This is the 2222nd most frequent Russian word.
дерево
Tree.
Here, 'дерево' refers to a tree in a literal sense, denoting a living plant with a trunk and branches.
В саду растёт большое дерево.
There is a large tree growing in the garden.
In this sentence, 'дерево' is used to mean 'wood', the material derived from trees.
Для крыши домика нам нужно много дерева.
We need a lot of wood for the roof of the house.
Here, 'дерево' is used figuratively to describe a representation of a tree in a drawing.