Why are the expressed powers of congress called enumerated powers?

The expressed powers of Congress are called enumerated powers because they are specifically listed and outlined in the Constitution, primarily in Article I, Section 8. The term "enumerated" signifies that these powers are explicitly numbered and detailed, providing a clear framework for the authority granted to Congress. This contrasts with implied powers, which are not explicitly stated but are derived from the enumerated powers. By enumerating these powers, the Constitution establishes a defined scope of legislative authority.