convention vs assembly

convention and assembly both are nouns.

Word	Noun	Adjective	Verb	Adverb
convention	Yes	No	No	No
assembly	Yes	No	No	No

As nouns, assembly is a hypernym of convention; that is, assembly is a word with a broader meaning than convention:

Other hypernyms of convention include assemblage, gathering.

convention (noun)	assembly (noun)
the act of convening	the social act of assembling
orthodoxy as a consequence of being conventional	the act of constructing something (as a piece of machinery)
something regarded as a normative example	a group of machine parts that fit together to form a self-contained unit
(diplomacy) an international agreement	a public facility to meet for open discussion
a large formal assembly	a unit consisting of components that have been fitted together
	a group of persons who are gathered together for a common purpose