Learn That Word

Synonyms for Arrangement (same or very similar meaning)

WordNet sense 1 (a piece of music that has been adapted for performance by a particular set of voices or instruments):
musical arrangement

WordNet sense 2 (the thing arranged or agreed to):

WordNet sense 3 (an organized structure for arranging or classifying):
organization, system, organisation

WordNet sense 4 (the spatial property of the way in which something is placed):

WordNet sense 5 (the act of arranging and adapting a piece of music):
transcription, arranging

From the ODE community, based on WordNetadd/edit