It is a flexible and small, short plant 
It has several main fibrous roots of the same size
Leaves make a big part of grass, they are narrow and grow from the base.
They do not produce fruit

It is medium size
It has multiple flexible stems
It has fibrous-tap roots
It has many small secondary branches
Some bushes have fruit
Flowers of most species have 5 petals


It is big
It has a rigid and hard stem (Trunk) sometimes covered by bark
It has long tap roots
We can see the age of a tree counting their rings in the trunk
Some of them loose their leaves when Autumn comes.
this woody has numerous secondary branches supported by the trunk
Some of them produce fruit
Trees play a significant role in reducing erosion and moderating the climate

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