That depends on the department.
If the department is a Cabinet Level department (Defense, Interior, etc.) the head is a cabinet secretary, while other departments (Postal Service, Fish and Wildlife Department) are not Cabinet Level and therefore their heads are not cabinet secretaries.
The senate approves the head of the cabinet department.
The senate
The President's Cabinet is a number of advisers who head executive departments, such as defense and treasury.
The President's Cabinet is a number of advisers who head executive departments, such as defense and treasury.
The President's Cabinet is composed of 15 Constitutionally designated officers. All of these officers have the title of Secretary to their particular department in the Cabinet. The head of national defense, for example, will have the title of Secretary of Defense.
Department of energy
It is called the Cabinet, and consists of the department Secretaries and the Attorney General.
It is called the Cabinet. The Cabinet consists of all the department heads appointed by the president and they individually and collectively advise the president on the decisions he must make. Head of the Justice Department is the Attorney General Head of the Labor Department is the Secretary of Labor Head of the Department of Defense is the Chairman of the Joint Chiefs Head of the Treasury Department is the Secretary of the Treasury There are several other departments in the Cabinet.
The President, because he is the head of a Cabinet department.
He is the head of the U.S. cabinet department of Veteran Affairs.
Legal
The Cabinet.