This is the 985th most frequent Russian word.
департамент
A department or division within an organization or government.
In this sentence, 'департамент' refers to an official governmental body that handles education.
Департамент образования организует новые курсы.
The Department of Education organizes new courses.
Here, 'департамент' indicates a specific branch or division within an organization focused on research.
Она работает в департаменте исследований.
She works in the research department.
In this context, 'департамент' is used to describe various internal divisions of a company.