The report ask me to give a comment in validity in superposition theorem

what should i write?

i have an answer given by me:

The validity of superpostion theorem only applies in a circuit whihc is series and parallel whereby we can separate them into a simple loop like shot-circuit the voltage source and open circuit in current source.And only 1 source is allow in a loop.

Actually,i think superposition=thevenin theorem+norton theorem

don u think so?

thevenin calculate voltage while norton calculate current

give some comment in validity in superposition and how about my answer