3. (noun)arrangement, organization, organisation, system an organized structure for arranging or classifying
"he changed the arrangement of the topics"; "the facts were familiar but it was in the organization of them that he was original"; "he tried to understand their system of classification"
4. (noun)placement, arrangement the spatial property of the way in which something is placed
"the arrangement of the furniture"; "the placement of the chairs"
5. (noun)musical arrangement, arrangement a piece of music that has been adapted for performance by a particular set of voices or instruments
6. (noun)arrangement, arranging, transcription the act of arranging and adapting a piece of music