| Term | Definition |
| delegated powers | powers the Constitution grants or delegates to the national government |
| expressed powers | powers directly stated in the Constitution |
| implied powers | powers that the government requires to carry out the expressed constitutional powers |
| elastic clause | clause in Article I, Section 8 of the Constitution that gives Congress the right to make all laws "necessary and proper" to carry out the powers expressed in the other clauses of Article I |
| inherent powers | powers that the national government may exercise simply because it's a government |
| reserved powers | powers that belong strictly to the states |
| supremacy clause | statement in Article VI of the Constitution establishing that the Constitution, laws passed by Congress, and treaties of the U.S. "shall be the supreme Law of the Land" |
| concurrent powers | powers that both the national government and the states have |
| enabling act | the first step in the state admission procedure which enables the people of a territory to prepare a constitution |