Define the term Synapse. How are Cytons and Axons of neurons placed in the Cerebrum?

Synapse is the point of contact between the terminal branches of the axon of a neuron with the dendrites of another neuron separated by a fine gap.
In the Cerebrum, Cytons are present in the outer portion (cortex) constituting the gray matter and Axons are present in the inner portion constituting the white matter.