quorum vs gathering

quorum and gathering both are nouns.

Word	Noun	Adjective	Verb	Adverb
quorum	Yes	No	No	No
gathering	Yes	No	No	No

As nouns, gathering is a hypernym of quorum; that is, gathering is a word with a broader meaning than quorum:

quorum: a gathering of the minimal number of members of an organization to conduct business
gathering: a group of persons together in one place

Other hypernyms of quorum include assemblage.

quorum (noun)	gathering (noun)
a gathering of the minimal number of members of an organization to conduct business	the social act of assembling
	the act of gathering something
	sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching
	a group of persons together in one place