assemblage vs grouping

assemblage and grouping both are nouns.

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

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

Other hypernyms of assemblage include group.

assemblage (noun)	grouping (noun)
the social act of assembling	any number of entities (members) considered as a unit
a system of components assembled together for a particular purpose	the activity of putting things together in groups
a group of persons together in one place	a system for classifying things into groups
several things grouped together or considered as a whole