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The event's arrangement was handled by a professional team.
The team organized and planned the event.
The act of arranging or the state of being arranged
The flower arrangement was beautiful.
The way the flowers were arranged was beautiful.
Often implies a deliberate and systematic organization
Often used in formal writing and professional settings, but also common in everyday language.
From Old French 'arrangement', from 'arranger', influenced by Latin 'disponere' (to place)
Common in both formal and informal contexts, though 'formal' is more prevalent in written language.