The executive department is more likely to be known as the branch that holds the power of the sword. This branch is concerned in the execution of governmental policies as it possesses the power to enforce and administer the laws.
The head of the executive department is often times referred as the Chief Executive. There are three types of chief executive, to wit:
Presidential executive, and
An authoritarian executive has no power limits. He can do whatever he wants. A parliamentary head, who's also the Cabinet head is directly accountable to the legislature and whose term is under the control of the Parliament. A presidential executive holds the final authority but his power is constrained by Congress and Judiciary under the principle of checks and balance. The President of the Philippines is an example of a presidential executive.