Origin: Latin suffix -ment
Department has 4 different meanings across 1 category:
a specialized division of a large organization
"you'll find it in the hardware department"
"she got a job in the historical section of the Treasury"
the territorial and administrative division of some countries (such as France)
"During her trip to Paris, she visited several different departments in northern France before heading south."
a specialized sphere of knowledge
"baking is not my department"
"his work established a new department of literature"
A part, portion, or subdivision.
"The new wing of the library is actually just a department designed to house rare manuscripts."
In plain English: A department is a specific section within a larger organization that handles one particular type of work.
"She works in the marketing department at her company."
Usage: Use "department" to refer to a specific division within an organization, such as a government agency or store section, rather than just any random part of something. It implies a structured group with defined responsibilities under a broader system.
The word entered English via the Old French departement, originally meaning a "ceasing" or an "end." Over time, its sense shifted to refer to a distinct section or division within an organization.