The Nigeria Railway Corporation (NRC) is an example of a state corporation (also called a public corporation). A state corporation is an enterprise established, owned, and funded by the government to provide essential services to the public. It is created by an act of parliament or a specific enabling law, and its operations are overseen by a board of directors appointed by the government.
The NRC was established by the government to provide rail transport services across Nigeria. Like other public corporations such as the Nigerian National Petroleum Corporation (NNPC) and the Power Holding Company of Nigeria (PHCN), it is funded primarily from government revenue and is accountable to the government rather than private shareholders.
A private corporation is owned by private individuals or shareholders and operates for profit. "Local corporation" and "regional corporation" are not standard classifications of public enterprises in Nigerian Government studies. The NRC operates at the national (federal) level, reinforcing its classification as a state corporation.