What is royal jelly? How does it differ from bee bread?

Royal jelly:

1. Royal jelly is a protein-rich food.
2. Young workers secrete royal jelly to feed their queen.
3. Royal jelly is secreted from young workers' hypophyseal glands.

Difference between royal jelly and bee bread:

ROYAL JELLY	BEE BREAD
1. Royal jelly is a protein-rich food.	1. Bee bread is a mixture of honey and pollen.
2. Young workers secrete royal jelly.	2. Adult workers prepare bee bread.
3. Royal jelly is secreted for the queen.	3. Bee bread is secreted for all other members.