What are concurrent powers?

Concurrent Powers

Concurrent Powers are powers shared by the federal and state governments. These powers include the ability to make laws, roads, defense, parks and enforcement for police, prisons, health, and environment, to name a few.
Concurrent powers are exercised by both the nation and the states over the same areas of policy.
Without these powers, then our society could possibly end up as an Anarchist colony, and easily attacked and defeated.
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NOTE regarding the answer above: According to Wikipedia.org these powers are NOT "shared" between the central and state government but are, rather, a collection of powers that the "*states & *federal government" have "in common".
"A common misunderstanding is that concurrent powers are shared powers between the central and state government. Concurrent powers are rather a collection of powers that the states and federal government have in common, not shared."