rave-up vs assemblage

rave-up and assemblage both are nouns.

Word	Noun	Adjective	Verb	Adverb
rave-up	Yes	No	No	No
assemblage	Yes	No	No	No

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

Other hypernyms of rave-up include gathering.

rave-up (noun)	assemblage (noun)
a large overnight dance party where electronic music is played and illegal drugs are usually taken	the social act of assembling
a raucous gathering	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