I think your asking "What are concurrent powers". The answer is that they are powers shared by the federal government and the state governments

processes are concurrent if they exist at the same time.concurrent process can function completely indepently to one another.

two process are concurrent if their execution can overlap in time; that is, the execution of the secon process starts before the first process completes.

concurrent processes generally interact through the following mechanisms:

Shared variables

Message passing

haha poopy

concurrent

Exercised simultaneously by the National and the State Government.