In this chapter, the following words mean:
(1) Agency: The Agency of Human Services.
(2) Department: A major component of the Agency.
(3) Director: The head of a division of the Agency.
(4) Division: A major component of a department engaged in furnishing services to the public or to units of government at levels other than the State level.
(5) Commissioner: The head of a department responsible to the Secretary for the administration of the department.
(6) Secretary: The head of the Agency, a member of the Governor’s Cabinet and responsible to the Governor for the administration of the Agency.