"department" in the noun sense
1. department, section
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)
a specialized sphere of knowledge
"baking is not my department"
"his work established a new department of literature"
Source: WordNet® (An amazing lexical database of English)
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