Shredding means cutting something into small, narrow pieces.
Shredding can be noisy and messy. Shredding can also be fun, like when you shred paper.
Examples:
I am shredding the paper.
She is shredding the old documents.
They are shredding the important papers.
The cat is shredding the curtains!
He is shredding the paper into a million pieces!
Stop shredding my drawings!