Hunger and Desire are sisters, like Despair and Desire are siblings. They are the same situation; all three derive from consumption.
When one suffers from Hunger, all one can think about is nourishment and how to satiate it.
When one is filled with Desire, all one can conceive of is how to obtain the objet de Desir.
When one is in the depths of Despair, all one can imagine is descending further down. This emotion is the most dire of the three.
With Hunger, there is (normally) eventual nourishment and satiation. With Desire, one can (normally) find their objet de Desir and sustain their want or need.
With Despair, there is almost no escape from her depths. You have to conduct a slow, steady climb yourself.
Be well.