Edited version=Noun Adjective Adjective

The Windy storm
A moon shakes on the wind
Sky flowing hidden

Original

The misty river has stopped
A frosty windy breeze
Of a windy waterfall

Random

The hidden rock whispers
A bitter clean tree
In a misty storm

Modified Vocabulary

A frosty rock walks
A sticky misty dog
Of a playful wind

It is easy to pick out the haiku written by the computer

Original written by human

A bitter sun
The river drifts on the sky
Gusty playful moon

Or is it???