what is the difference between drought and famine?

Drought is a condition when an area gets deficient in its water supply which may be surface water or ground water. Cracks are seen on ground in adverse conditions due to very high deficiency of water and water table also depletes further.

Famine is a widespread scarcity of food, caused by several factors including crop failure, overpopulation, or government policies. This phenomenon is usually accompanied or followed by regional malnutrition, starvation, epidemic, and increased mortality.