In a unitary system of government, there is a high degree of centralization, which means that power and authority are concentrated in the central government. The central government has the power to make decisions and set policies that are binding on all parts of the country, including local governments and other sub-national units.
In a unitary system, the parliament may not necessarily be weak, but it is subordinate to the central government. This means that the parliament may have limited powers and may not be able to challenge or override the decisions of the central government.
There is typically a low degree of decentralization in a unitary system of government, as power is not shared equally among different levels of government. Local governments and other sub-national units may have limited autonomy and may be subject to the authority of the central government.
Overall, a unitary system of government is characterized by a strong central government and a hierarchical relationship between different levels of government. Legislative powers can be delegated to local councils, but the central government retains ultimate authority.