A federal arrangement in which power is clearly divided between the national government and the states, and each entity operates separately within its own sphere of power, is known as

Cooperative federalism refers to a system where the national and state governments work together to address common issues, often leading to shared responsibilities and overlapping functions. This contrasts with dual federalism, where such collaboration is minimized and each level of government operates separately within its designated powers.

Corporate federalism is not a widely recognized term in the context of government structures. It may suggest a focus on the relationship between government and business entities, which does not accurately reflect the division of powers typical in federal systems. As such, it does not apply to the concept of clearly divided governmental powers.

National federalism implies a stronger central government with more power than the states, which contradicts the definition of dual federalism. In this model, the national government would dominate, limiting the autonomy of state governments rather than maintaining a clear separation of powers.

New federalism refers to a political philosophy aimed at restoring some powers to the states that had been previously centralized in the national government. While it advocates for state authority, it does not define the clear separation characteristic of dual federalism, which specifically emphasizes distinct spheres of power.