town meeting vs meeting

town meeting and meeting both are nouns.

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

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

Other hypernyms of town meeting include group meeting.

town meeting (noun)	meeting (noun)
government of a town by an assembly of the qualified voters	the social act of assembling for some common purpose
a meeting of the inhabitants of a town	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)