socializing vs meeting

socializing and meeting both are nouns.

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

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

Other hypernyms of socializing include coming together, congress.

socializing (noun)	meeting (noun)
the act of meeting for social purposes	the social act of assembling for some common purpose
	the act of joining together as one
	a casual or unexpected convergence
	a formally arranged gathering
	a small informal social gathering
	a place where things merge or flow together (especially rivers)