The only difference between the Plebeian Council after 471 BC and the ordinary Tribal Assembly (which also organized on the basis of the tribes) was that the tribes of the Plebeian Council included only plebeians, whereas the tribes of the Tribal Assembly included both plebeians and patricians.
The Concilium Plebis (English : Plebeian Council, Plebeian Assembly, or People's Assembly) was the principal assembly of the ancient Roman Republic. It functioned as a legislative assembly, through which the plebeians (commoners) could pass laws, elect magistrates, and try judicial cases.
The difference between the Assembly of the Centuries and the Assembly of the Tribes is that the Assembly of the Centuries are divided into groups based on ones wealth, sentenced people to death, and only elected the senior magistrates which were consuls, praetors and censors. The Assembly of the tribes were divided based on their geography location, and elected the minor magistrates, and voted on laws. The Assembly of the Centuries gave more control to the wealthy.
