octette vs assemblage

octette and assemblage both are nouns.

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

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

Other hypernyms of octette include gathering.

octette (noun)	assemblage (noun)
a musical composition written for eight performers	the social act of assembling
eight people considered as a unit	a system of components assembled together for a particular purpose
a set of eight similar things considered as a unit	a group of persons together in one place
eight performers or singers who perform together	several things grouped together or considered as a whole