Question

1. Look at the scared boy.

2. Look at the scary monster.
3. Look at the scaring boy.
4. Look at the scaring monster.
5. Look at the scary boy.
6. Look at the scared monster.
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Are they all grammatical? What is the difference?

Answer 1

3, 4 and 5 are not correct. I doubt if you mean that the monster is afraid in 6.