meeting vs assemblage

meeting and assemblage both are nouns.

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

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

Other hypernyms of meeting include assembly, gathering.

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

Other hypernyms of meeting include assembly, gathering.

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