Definitions for "Concurrent powers"
Powers that may be exercised by both the federal government and the state governments – for example, levying taxes, borrowing money, and spending for the general welfare.
Powers shared by both the federal and the state governments.
Those powers of the federal government that are exercisable by the states in absence of federal action, or with congressional consent. Such powers are not concurrent in the sense of equal power with the federal government; they are subordinate to the superior authority and superceded whenever the power of Congress is exercised. State regulation of pilotage is an example of a concurrent power.