meeting vs gathering

meeting and gathering both are nouns.

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

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

Other hypernyms of meeting include assemblage, assembly.

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

Other hypernyms of meeting include assemblage, assembly.

meeting (noun)	gathering (noun)
the social act of assembling for some common purpose	the social act of assembling
the act of joining together as one	the act of gathering something
a casual or unexpected convergence	sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching
a formally arranged gathering	a group of persons together in one place
a small informal social gathering
a place where things merge or flow together (especially rivers)