assemblage vs meeting

assemblage and meeting both are nouns.

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

As nouns, meeting is a hyponym of assemblage; that is, meeting is a word with a more specific, narrower meaning than assemblage:

assemblage (noun)	meeting (noun)
the social act of assembling	the social act of assembling for some common purpose
a system of components assembled together for a particular purpose	the act of joining together as one
a group of persons together in one place	a casual or unexpected convergence
several things grouped together or considered as a whole	a formally arranged gathering
	a small informal social gathering
	a place where things merge or flow together (especially rivers)