arrangement vs agreement

arrangement and agreement both are nouns.

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

As nouns, arrangement and agreement are synonyms defined as:

arrangement (noun)	agreement (noun)
the act of arranging and adapting a piece of music	compatibility of observations
the spatial property of the way in which something is placed	the thing arranged or agreed to
an organized structure for arranging or classifying	the verbal act of agreeing
the thing arranged or agreed to	the statement (oral or written) of an exchange of promises
a piece of music that has been adapted for performance by a particular set of voices or instruments	the determination of grammatical inflection on the basis of word relations
an orderly grouping (of things or persons) considered as a unit; the result of arranging	harmony of people's opinions or actions or characters