napoleoniana vs assemblage

napoleoniana and assemblage both are nouns.

Word	Noun	Adjective	Verb	Adverb
napoleoniana	Yes	No	No	No
assemblage	Yes	No	No	No

As nouns, assemblage is a hypernym of napoleoniana; that is, assemblage is a word with a broader meaning than napoleoniana:

napoleoniana: items related to the life of Napoleon (engravings, paintings, books, etc.).
assemblage: several things grouped together or considered as a whole

Other hypernyms of napoleoniana include accumulation, aggregation, collection.

napoleoniana (noun)	assemblage (noun)
items related to the life of Napoleon (engravings, paintings, books, etc.).	the social act of assembling
	a system of components assembled together for a particular purpose
	a group of persons together in one place
	several things grouped together or considered as a whole