Difference between Cerebrum and Cerebellum

The cerebrum consists of two cerebral hemisphere joined by a curved thick band of nerve fibres, called corpus callosum. The outer layer of the cerebrum , known as cerebral cortex , is formed of grey matter and white matter. The cerebellum is similar to cerebrum  in that it has two hemispheres and has a highly folded surface or cortex. The cerebellum is the second largest part of the brain, and is located at the back of the skull.

Cerebrum vs Cerebellum

Cerebrum
1. It is the largest part of the brain, forming four fifths of its weight.
2. It is a part of the centre for forebrain.
3. It consists of two cerebral hemisperes each comprising four lobes: frontal, occipital, parietal, temporal.
4. White matter does not form arbor vitae.
5. It initiates voluntary movements, and is a seat of will, intelligence, memory etc.

Cerebellum
1. It is the second largest part of the brain, forming one eighth of its mass.
2. It is a part of the hindbrain.
3. It consists of two cerebellar hemisperes and a median vermis.
4. White matter form arbor vitae.
5. It maintains posture and equilibrium.