branch, subdivision, arm - an administrative division of some larger or more complex organization; "a branch of Congress" --3is a kind ofdivision --3has particulars:
section, subdivision - a self-contained part of a larger composition (written or musical); "he always turns first to the business section"; "the history of this work is discussed in the next section" --4is a kind ofwriting, written material, piece of writing; music --4has particulars: