Difference between Corm and Bulb

Bulb and corm are the underground stem modifications in which stems are seen below the surface of the soil and are modified to store the food.

Bulb vs Corm

Bulb	Corm
The stem is a condensed, discoid structure.	The stem is a cylindrical, vertically growing structure.
Adventitious roots develop from the ventral side of the stem.	Adventitious roots develop all over the stem.
Contractile roots are absent.	Contractile roots are present.
Terminal bud is small.	Terminal bud is large.
Food is stored in the leaf bases.	Food is stored in the stem.
Example of Bulb: Onion(Allium cepa)	Example of Corm: Gladious, Colocasia Amorphophallus