English to Arabic Law/Patents Government / Politics

i have few terms related to the organizational chart of Governmental body, but i have a bit confusion about the degree of the power of the title , such as degree in the following, in Ministries in Jordan in order to avoid any confusion and odd name

Administration
Directorate (it could be used as department)
Department
Unit
Section
Division
Employee

could you please help me to understand the differences in order to use the exact term in translation into Arabic.
I posted in the English forum and it was fruitful discussions , and i was advised to posted here .
Administration أدارة
Directorate (it could be used as department) مديرية
Department مديرية as in other Ministries like MOPIC
district / qadaa directorate مديرية لواء relating to the governorate's district
Unit وحدة
Section قسم and some prefer شعبة
Division شعبة many prefer قسم
so the last two terms i am confused

هناك مديريات في داخل المبنى الحكومي ومديريات في المحافظات وداخل الألوية للمحافظة التي تتواجد فيها مديرية المحافظة هل هناك فرق بالتسمية لمديرية المحافظة ومديرية اللواء او نكتفي فقط بوضع لواء والمديرية تبقى نفسها

A