different between shaggy vs fleecy

English

shag +? -y

shaggy (comparative shaggier, superlative shaggiest)

With long, thick, and uncombed hair, fur or wool.
- 1900, L. Frank Baum, The Wonderful Wizard of Oz
  They waited until Dorothy awoke the next morning. The little girl was quite frightened when she saw the great pile of shaggy wolves, but the Tin Woodman told her all. She thanked him for saving them and sat down to breakfast, after which they started again upon their journey.
With a surface like shaggy hair; rough nap.

fleece +? -y

fleecy (comparative fleecier, superlative fleeciest)

Resembling or covered in fleece.
- 1847, Emily Brontë, Wuthering Heights, chapter XX:
  {...} turning to take a last glance into the valley, whence a light mist mounted and formed a fleecy cloud on the skirts of the blue.
- So this was my future home, I thought! […] Backed by towering hills, the but faintly discernible purple line of the French boundary off to the southwest, a sky of palest Gobelin flecked with fat, fleecy little clouds, it in truth looked a dear little city; the city of one's dreams.

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