instrumentation vs arrangement

instrumentation and arrangement both are nouns.

Word	Noun	Adjective	Verb	Adverb
instrumentation	Yes	No	No	No
arrangement	Yes	No	No	No

As nouns, arrangement is a hypernym of instrumentation; that is, arrangement is a word with a broader meaning than instrumentation:

instrumentation: the act of arranging a piece of music for an orchestra and assigning parts to the different musical instruments
arrangement: the act of arranging and adapting a piece of music

Other hypernyms of instrumentation include arranging, transcription.

As nouns, arrangement is a hypernym of instrumentation; that is, arrangement is a word with a broader meaning than instrumentation:

instrumentation: the instruments called for in a musical score or arrangement for a band or orchestra
arrangement: a piece of music that has been adapted for performance by a particular set of voices or instruments

Other hypernyms of instrumentation include musical arrangement.

instrumentation (noun)	arrangement (noun)
the act of providing or using the instruments needed for some implementation	the act of arranging and adapting a piece of music
the act of arranging a piece of music for an orchestra and assigning parts to the different musical instruments	the spatial property of the way in which something is placed
an artifact (that is instrumental in accomplishing some end) for accomplishing some end	an organized structure for arranging or classifying
the instruments called for in a musical score or arrangement for a band or orchestra	the thing arranged or agreed to
	a piece of music that has been adapted for performance by a particular set of voices or instruments
	an orderly grouping (of things or persons) considered as a unit; the result of arranging