group meeting vs meeting

group meeting and meeting both are nouns.

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

As nouns, group meeting and meeting are synonyms defined as:

group meeting (noun)	meeting (noun)
a formally arranged gathering	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)