position paper vs aide-memoire

position paper and aide-memoire both are nouns.

Word	Noun	Adjective	Verb	Adverb
position paper	Yes	No	No	No
aide-memoire	Yes	No	No	No

As nouns, position paper and aide-memoire are synonyms defined as:

position paper and aide-memoire: a memorandum summarizing the items of an agreement (used especially in diplomatic communications)

position paper (noun)	aide-memoire (noun)
a report that explains or justifies or recommends some particular policy	a memorandum summarizing the items of an agreement (used especially in diplomatic communications)
a memorandum summarizing the items of an agreement (used especially in diplomatic communications)