get together vs meeting

get together and meeting both are nouns.

Word	Noun	Adjective	Verb	Adverb
get together	Yes	No	Yes	No
meeting	Yes	No	No	No

As nouns, get together and meeting are synonyms defined as:

get together (noun)	meeting (noun)
a small informal social 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)

get together (verb)	meeting (verb)
get together socially or for a specific purpose
become part of; become a member of a group or organization
get people together